CONT: Addition of compressibleIsoInterFOam and PLIC

1) Implementation of the compressibleIsoInterFOam solver
   2) Implementation of a new PLIC interpolation scheme.
   3) New tutorials associated with the solvers

This implementation was carried out by Henning Scheufler (DLR) and Johan
Roenby (DHI), following :

\verbatim

Henning Scheufler, Johan Roenby,
Accurate and efficient surface reconstruction from volume fraction data
on general meshes, Journal of Computational Physics, 2019, doi
10.1016/j.jcp.2019.01.009

\endverbatim

The integration of the code was carried out by Andy Heather and Sergio
Ferraris from OpenCFD Ltd.

applications/solvers/multiphase/compressibleInterIsoFoam/Make/files

@@ -0,0 +1,3 @@
+compressibleInterIsoFoam.C
+
+EXE = $(FOAM_APPBIN)/compressibleInterIsoFoam

applications/solvers/multiphase/compressibleInterIsoFoam/Make/options

@@ -0,0 +1,39 @@
+EXE_INC = \
+    -I. \
+    -I../VoF \
+    -I../compressibleInterFoam \
+    -I$(FOAM_SOLVERS)/multiphase/compressibleInterFoam/twoPhaseMixtureThermo \
+    -I$(FOAM_SOLVERS)/multiphase/compressibleInterFoam/VoFphaseCompressibleTurbulenceModels \
+    -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/surfMesh/lnInclude \
+    -I$(LIB_SRC)/meshTools/lnInclude \
+    -I$(LIB_SRC)/dynamicMesh/lnInclude \
+    -I$(LIB_SRC)/dynamicFvMesh/lnInclude \
+    -I$(LIB_SRC)/transportModels/compressible/lnInclude \
+    -I$(LIB_SRC)/thermophysicalModels/basic/lnInclude \
+    -I$(LIB_SRC)/transportModels/twoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/transportModels/interfaceProperties/lnInclude \
+    -I$(LIB_SRC)/TurbulenceModels/turbulenceModels/lnInclude \
+    -I$(LIB_SRC)/TurbulenceModels/compressible/lnInclude \
+    -I$(LIB_SRC)/TurbulenceModels/phaseCompressible/lnInclude \
+    -I$(LIB_SRC)/transportModels/geometricVoF/lnInclude
+
+EXE_LIBS = \
+    -lfiniteVolume \
+    -lfvOptions \
+    -lsurfMesh \
+    -lmeshTools \
+    -ldynamicMesh \
+    -ldynamicFvMesh \
+    -ltwoPhaseMixtureThermo \
+    -ltwoPhaseSurfaceTension \
+    -lcompressibleTransportModels \
+    -lfluidThermophysicalModels \
+    -lspecie \
+    -ltwoPhaseMixture \
+    -ltwoPhaseProperties \
+    -linterfaceProperties \
+    -lturbulenceModels \
+    -lcompressibleTurbulenceModels \
+    -lVoFphaseCompressibleTurbulenceModels \
+    -lgeometricVoF

applications/solvers/multiphase/compressibleInterIsoFoam/alphaControls.H

@@ -0,0 +1,3 @@
+const dictionary& alphaControls = mesh.solverDict(alpha1.name());
+
+label nAlphaSubCycles(alphaControls.get<label>("nAlphaSubCycles"));

applications/solvers/multiphase/compressibleInterIsoFoam/alphaEqn.H

@@ -0,0 +1,15 @@
+// Update alpha1
+#include "alphaSuSp.H"
+advector.advect(Sp,(Su + divU*min(alpha1(), scalar(1)))());
+
+// Update rhoPhi
+rhoPhi = advector.getRhoPhi(rho1, rho2);
+alphaPhi10 = advector.alphaPhi();
+
+alpha2 = 1.0 - alpha1;
+
+Info<< "Phase-1 volume fraction = "
+    << alpha1.weightedAverage(mesh.Vsc()).value()
+    << "  Min(" << alpha1.name() << ") = " << min(alpha1).value()
+    << "  Max(" << alpha1.name() << ") - 1 = " << max(alpha1).value() - 1
+    << endl;

applications/solvers/multiphase/compressibleInterIsoFoam/alphaSuSp.H

@@ -0,0 +1,43 @@
+volScalarField::Internal Sp
+(
+    IOobject
+    (
+        "Sp",
+        runTime.timeName(),
+        mesh
+    ),
+    mesh,
+    dimensionedScalar(dgdt.dimensions(), Zero)
+);
+
+volScalarField::Internal Su
+(
+    IOobject
+    (
+        "Su",
+        runTime.timeName(),
+        mesh
+    ),
+    mesh,
+    dimensionedScalar(dgdt.dimensions(), Zero)
+);
+
+forAll(dgdt, celli)
+{
+    if (dgdt[celli] > 0.0)
+    {
+        Sp[celli] -= dgdt[celli]/max(1.0 - alpha1[celli], 1e-4);
+        Su[celli] += dgdt[celli]/max(1.0 - alpha1[celli], 1e-4);
+    }
+    else if (dgdt[celli] < 0.0)
+    {
+        Sp[celli] += dgdt[celli]/max(alpha1[celli], 1e-4);
+    }
+}
+
+volScalarField::Internal divU
+(
+    mesh.moving()
+  ? fvc::div(phi + mesh.phi())
+  : fvc::div(phi)
+);

applications/solvers/multiphase/compressibleInterIsoFoam/compressibleAlphaEqnSubCycle.H

@@ -0,0 +1,70 @@
+if (pimple.nCorrPIMPLE() > 1)
+{
+    if (!pimple.firstIter())
+    {
+        // Resetting alpha1 to value before advection in first PIMPLE
+        // iteration.
+        alpha1 = alpha1.oldTime();
+    }
+}
+tmp<surfaceScalarField> talphaPhi1(alphaPhi10);
+
+if (nAlphaSubCycles > 1)
+{
+    dimensionedScalar totalDeltaT = runTime.deltaT();
+
+    talphaPhi1 = new surfaceScalarField
+    (
+        IOobject
+        (
+            "alphaPhi1",
+            runTime.timeName(),
+            mesh
+        ),
+        mesh,
+        dimensionedScalar(alphaPhi10.dimensions(), Zero)
+    );
+
+    surfaceScalarField rhoPhiSum
+    (
+        IOobject
+        (
+            "rhoPhiSum",
+            runTime.timeName(),
+            mesh
+        ),
+        mesh,
+        dimensionedScalar(rhoPhi.dimensions(), Zero)
+    );
+
+    for
+    (
+        subCycle<volScalarField> alphaSubCycle(alpha1, nAlphaSubCycles);
+        !(++alphaSubCycle).end();
+    )
+    {
+        #include "alphaEqn.H"
+        talphaPhi1.ref() += (runTime.deltaT()/totalDeltaT)*alphaPhi10;
+        rhoPhiSum += (runTime.deltaT()/totalDeltaT)*rhoPhi;
+    }
+
+    rhoPhi = rhoPhiSum;
+}
+else
+{
+    #include "alphaEqn.H"
+}
+
+rho == alpha1*rho1 + alpha2*rho2;
+
+const surfaceScalarField& alphaPhi1 = talphaPhi1();
+surfaceScalarField alphaPhi2("alphaPhi2", phi - alphaPhi1);
+
+volScalarField::Internal contErr
+(
+    (
+        fvc::ddt(rho) + fvc::div(rhoPhi)
+      - (fvOptions(alpha1, mixture.thermo1().rho())&rho1)
+      - (fvOptions(alpha2, mixture.thermo2().rho())&rho2)
+    )()
+);

applications/solvers/multiphase/compressibleInterIsoFoam/compressibleInterIsoFoam.C

@@ -0,0 +1,203 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2020 OpenCFD Ltd.
+    Copyright (C) 2020 Johan Roenby
+    Copyright (C) 2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Application
+    compressibleInterFlow
+
+Description
+    Solver derived from interFoam for two compressible, immiscible
+    fluids using the isoAdvector phase-fraction based interface capturing
+    approach, with optional mesh motion and mesh topology changes including
+    adaptive re-meshing.
+
+    Reference:
+    \verbatim
+        Roenby, J., Bredmose, H. and Jasak, H. (2016).
+        A computational method for sharp interface advection
+        Royal Society Open Science, 3
+        doi 10.1098/rsos.160405
+    \endverbatim
+
+\*---------------------------------------------------------------------------*/
+
+#include "fvCFD.H"
+#include "dynamicFvMesh.H"
+#include "CMULES.H"
+#include "EulerDdtScheme.H"
+#include "localEulerDdtScheme.H"
+#include "CrankNicolsonDdtScheme.H"
+#include "subCycle.H"
+#include "compressibleInterPhaseTransportModel.H"
+#include "pimpleControl.H"
+#include "fvOptions.H"
+#include "CorrectPhi.H"
+#include "fvcSmooth.H"
+#include "dynamicRefineFvMesh.H"
+#include "isoAdvection.H"
+#include "twoPhaseMixtureThermo.H"
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+int main(int argc, char *argv[])
+{
+    argList::addNote
+    (
+        "Solver for two compressible, non-isothermal immiscible fluids"
+        " using VOF phase-fraction based interface capturing.\n"
+        "With optional mesh motion and mesh topology changes including"
+        " adaptive re-meshing."
+    );
+
+    #include "postProcess.H"
+
+    #include "setRootCaseLists.H"
+    #include "createTime.H"
+    #include "createDynamicFvMesh.H"
+    #include "initContinuityErrs.H"
+    #include "createDyMControls.H"
+    #include "createFields.H"
+    #include "createUf.H"
+    #include "CourantNo.H"
+    #include "setInitialDeltaT.H"
+
+    volScalarField& p = mixture.p();
+    volScalarField& T = mixture.T();
+    const volScalarField& psi1 = mixture.thermo1().psi();
+    const volScalarField& psi2 = mixture.thermo2().psi();
+
+    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+    Info<< "\nStarting time loop\n" << endl;
+
+    while (runTime.run())
+    {
+        #include "readDyMControls.H"
+
+        // Store divU and divUp from the previous mesh so that it can be mapped
+        // and used in correctPhi to ensure the corrected phi has the
+        // same divergence
+        volScalarField divU("divU0", fvc::div(fvc::absolute(phi, U)));
+
+        #include "CourantNo.H"
+        #include "alphaCourantNo.H"
+        #include "setDeltaT.H"
+
+
+        ++runTime;
+
+        Info<< "Time = " << runTime.timeName() << nl << endl;
+
+        // --- Pressure-velocity PIMPLE corrector loop
+        while (pimple.loop())
+        {
+            if (pimple.firstIter() || moveMeshOuterCorrectors)
+            {
+                scalar timeBeforeMeshUpdate = runTime.elapsedCpuTime();
+
+                if (isA<dynamicRefineFvMesh>(mesh))
+                {
+                    advector.surf().reconstruct();
+                }
+
+                mesh.update();
+
+                if (mesh.changing())
+                {
+                    gh = (g & mesh.C()) - ghRef;
+                    ghf = (g & mesh.Cf()) - ghRef;
+
+                    if (isA<dynamicRefineFvMesh>(mesh))
+                    {
+                        advector.surf().mapAlphaField();
+                        alpha2 = 1.0 - alpha1;
+                        alpha2.correctBoundaryConditions();
+                        rho == alpha1*rho1 + alpha2*rho2;
+                        rho.correctBoundaryConditions();
+                        rho.oldTime() = rho;
+                        alpha2.oldTime() = alpha2;
+                    }
+
+                    MRF.update();
+
+                    Info<< "Execution time for mesh.update() = "
+                        << runTime.elapsedCpuTime() - timeBeforeMeshUpdate
+                        << " s" << endl;
+
+                }
+
+                if ((mesh.changing() && correctPhi))
+                {
+                    // Calculate absolute flux from the mapped surface velocity
+                    phi = mesh.Sf() & Uf;
+
+                    #include "correctPhi.H"
+
+                    // Make the fluxes relative to the mesh motion
+                    fvc::makeRelative(phi, U);
+
+                    mixture.correct();
+                }
+
+                if (mesh.changing() && checkMeshCourantNo)
+                {
+                    #include "meshCourantNo.H"
+                }
+            }
+
+            #include "alphaControls.H"
+            #include "compressibleAlphaEqnSubCycle.H"
+
+            turbulence.correctPhasePhi();
+
+            #include "UEqn.H"
+            volScalarField divUp("divUp", fvc::div(fvc::absolute(phi, U), p));
+            #include "TEqn.H"
+
+            // --- Pressure corrector loop
+            while (pimple.correct())
+            {
+                #include "pEqn.H"
+            }
+
+            if (pimple.turbCorr())
+            {
+                turbulence.correct();
+            }
+        }
+
+        runTime.write();
+
+        runTime.printExecutionTime(Info);
+    }
+
+    Info<< "End\n" << endl;
+
+    return 0;
+}
+
+
+// ************************************************************************* //

applications/solvers/multiphase/compressibleInterIsoFoam/correctPhi.H

@@ -0,0 +1,13 @@
+CorrectPhi
+(
+    U,
+    phi,
+    p,
+    dimensionedScalar("rAUf", dimTime/rho.dimensions(), 1),
+    divU,
+    pimple
+);
+
+//***HGW phi.oldTime() = phi;
+
+#include "continuityErrs.H"

applications/solvers/multiphase/compressibleInterIsoFoam/createFields.H

@@ -0,0 +1,110 @@
+#include "createRDeltaT.H"
+
+Info<< "Reading field p_rgh\n" << endl;
+volScalarField p_rgh
+(
+    IOobject
+    (
+        "p_rgh",
+        runTime.timeName(),
+        mesh,
+        IOobject::MUST_READ,
+        IOobject::AUTO_WRITE
+    ),
+    mesh
+);
+
+Info<< "Reading field U\n" << endl;
+volVectorField U
+(
+    IOobject
+    (
+        "U",
+        runTime.timeName(),
+        mesh,
+        IOobject::MUST_READ,
+        IOobject::AUTO_WRITE
+    ),
+    mesh
+);
+
+#include "createPhi.H"
+
+Info<< "Constructing twoPhaseMixtureThermo\n" << endl;
+twoPhaseMixtureThermo mixture(U, phi);
+
+
+volScalarField& alpha1(mixture.alpha1());
+volScalarField& alpha2(mixture.alpha2());
+
+Info<< "Reading thermophysical properties\n" << endl;
+
+const volScalarField& rho1 = mixture.thermo1().rho();
+const volScalarField& rho2 = mixture.thermo2().rho();
+
+volScalarField rho
+(
+    IOobject
+    (
+        "rho",
+        runTime.timeName(),
+        mesh,
+        IOobject::READ_IF_PRESENT,
+        IOobject::AUTO_WRITE
+    ),
+    alpha1*rho1 + alpha2*rho2
+);
+
+
+dimensionedScalar pMin
+(
+    "pMin",
+    dimPressure,
+    mixture
+);
+
+mesh.setFluxRequired(p_rgh.name());
+mesh.setFluxRequired(alpha1.name());
+
+
+#include "readGravitationalAcceleration.H"
+#include "readhRef.H"
+#include "gh.H"
+
+
+// Mass flux
+// Initialisation does not matter because rhoPhi is reset after the
+// alpha1 solution before it is used in the U equation.
+surfaceScalarField rhoPhi
+(
+    IOobject
+    (
+        "rhoPhi",
+        runTime.timeName(),
+        mesh,
+        IOobject::NO_READ,
+        IOobject::NO_WRITE
+    ),
+    fvc::interpolate(rho)*phi
+);
+
+volScalarField dgdt(alpha1*fvc::div(phi));
+
+#include "createAlphaFluxes.H"
+
+Foam::isoAdvection advector(alpha1,phi,U);
+// Construct compressible turbulence model
+compressibleInterPhaseTransportModel turbulence
+(
+    rho,
+    U,
+    phi,
+    rhoPhi,
+    alphaPhi10,
+    mixture
+);
+
+#include "createK.H"
+
+#include "createMRF.H"
+#include "createFvOptions.H"

applications/solvers/multiphase/compressibleInterIsoFoam/pEqn.H

@@ -0,0 +1,169 @@
+{
+    volScalarField rAU("rAU", 1.0/UEqn.A());
+    surfaceScalarField rAUf("rAUf", fvc::interpolate(rAU));
+    volVectorField HbyA(constrainHbyA(rAU*UEqn.H(), U, p_rgh));
+    surfaceScalarField phiHbyA
+    (
+        "phiHbyA",
+        fvc::flux(HbyA)
+      + MRF.zeroFilter(fvc::interpolate(rho*rAU)*fvc::ddtCorr(U, Uf))
+    );
+    MRF.makeRelative(phiHbyA);
+
+    surfaceScalarField phig
+    (
+        (
+            mixture.surfaceTensionForce()
+          - ghf*fvc::snGrad(rho)
+        )*rAUf*mesh.magSf()
+    );
+
+    phiHbyA += phig;
+
+    // Update the pressure BCs to ensure flux consistency
+    constrainPressure(p_rgh, U, phiHbyA, rAUf, MRF);
+
+    // Make the fluxes relative to the mesh motion
+    fvc::makeRelative(phiHbyA, U);
+
+    tmp<fvScalarMatrix> p_rghEqnComp1;
+    tmp<fvScalarMatrix> p_rghEqnComp2;
+
+    if (pimple.transonic())
+    {
+        #include "rhofs.H"
+
+        surfaceScalarField phid1("phid1", fvc::interpolate(psi1)*phi);
+        surfaceScalarField phid2("phid2", fvc::interpolate(psi2)*phi);
+
+        p_rghEqnComp1 =
+            (
+                (
+                    fvc::ddt(alpha1, rho1) + fvc::div(alphaPhi1*rho1f)
+                  - (fvOptions(alpha1, mixture.thermo1().rho())&rho1)
+                )/rho1
+              - fvc::ddt(alpha1) - fvc::div(alphaPhi1)
+              + (alpha1/rho1)
+               *correction
+                (
+                    psi1*fvm::ddt(p_rgh)
+                  + fvm::div(phid1, p_rgh) - fvm::Sp(fvc::div(phid1), p_rgh)
+                )
+            );
+        p_rghEqnComp1.ref().relax();
+
+        p_rghEqnComp2 =
+            (
+               (
+                   fvc::ddt(alpha2, rho2) + fvc::div(alphaPhi2*rho2f)
+                 - (fvOptions(alpha2, mixture.thermo2().rho())&rho2)
+               )/rho2
+             - fvc::ddt(alpha2) - fvc::div(alphaPhi2)
+             + (alpha2/rho2)
+              *correction
+               (
+                   psi2*fvm::ddt(p_rgh)
+                 + fvm::div(phid2, p_rgh) - fvm::Sp(fvc::div(phid2), p_rgh)
+               )
+           );
+        p_rghEqnComp2.ref().relax();
+    }
+    else
+    {
+        #include "rhofs.H"
+
+        p_rghEqnComp1 =
+            pos(alpha1)
+           *(
+                (
+                    fvc::ddt(alpha1, rho1) + fvc::div(alphaPhi1*rho1f)
+                  - (fvOptions(alpha1, mixture.thermo1().rho())&rho1)
+                )/rho1
+              - fvc::ddt(alpha1) - fvc::div(alphaPhi1)
+              + (alpha1*psi1/rho1)*correction(fvm::ddt(p_rgh))
+            );
+
+        p_rghEqnComp2 =
+            pos(alpha2)
+           *(
+               (
+                   fvc::ddt(alpha2, rho2) + fvc::div(alphaPhi2*rho2f)
+                 - (fvOptions(alpha2, mixture.thermo2().rho())&rho2)
+               )/rho2
+             - fvc::ddt(alpha2) - fvc::div(alphaPhi2)
+             + (alpha2*psi2/rho2)*correction(fvm::ddt(p_rgh))
+            );
+    }
+
+    if (mesh.moving())
+    {
+        p_rghEqnComp1.ref() += fvc::div(mesh.phi())*alpha1;
+        p_rghEqnComp2.ref() += fvc::div(mesh.phi())*alpha2;
+    }
+
+    p_rghEqnComp1.ref() *= pos(alpha1);
+    p_rghEqnComp2.ref() *= pos(alpha2);
+
+    if (pimple.transonic())
+    {
+        p_rghEqnComp1.ref().relax();
+        p_rghEqnComp2.ref().relax();
+    }
+
+    // Cache p_rgh prior to solve for density update
+    volScalarField p_rgh_0(p_rgh);
+
+    while (pimple.correctNonOrthogonal())
+    {
+        fvScalarMatrix p_rghEqnIncomp
+        (
+            fvc::div(phiHbyA)
+          - fvm::laplacian(rAUf, p_rgh)
+        );
+
+         solve
+         (
+             p_rghEqnComp1() + p_rghEqnComp2() + p_rghEqnIncomp,
+             mesh.solver(p_rgh.select(pimple.finalInnerIter()))
+         );
+
+        if (pimple.finalNonOrthogonalIter())
+        {
+            p = max(p_rgh + (alpha1*rho1 + alpha2*rho2)*gh, pMin);
+            p_rgh = p - (alpha1*rho1 + alpha2*rho2)*gh;
+
+            dgdt =
+            (
+                alpha1*(p_rghEqnComp2 & p_rgh)
+              - alpha2*(p_rghEqnComp1 & p_rgh)
+            );
+
+            phi = phiHbyA + p_rghEqnIncomp.flux();
+
+            U = HbyA
+              + rAU*fvc::reconstruct((phig + p_rghEqnIncomp.flux())/rAUf);
+            U.correctBoundaryConditions();
+            fvOptions.correct(U);
+        }
+    }
+
+    // Correct Uf if the mesh is moving
+    {
+        Uf = fvc::interpolate(U);
+        surfaceVectorField n(mesh.Sf()/mesh.magSf());
+        Uf += n*(fvc::absolute(phi, U)/mesh.magSf() - (n & Uf));
+    }
+
+
+    // Update densities from change in p_rgh
+    mixture.thermo1().correctRho(psi1*(p_rgh - p_rgh_0));
+    mixture.thermo2().correctRho(psi2*(p_rgh - p_rgh_0));
+
+    rho = alpha1*rho1 + alpha2*rho2;
+
+    // Correct p_rgh for consistency with p and the updated densities
+    p_rgh = p - rho*gh;
+    p_rgh.correctBoundaryConditions();
+
+    K = 0.5*magSqr(U);
+}

applications/solvers/multiphase/icoReactingMultiphaseInterFoam/massTransferModels/Make/options

@@ -7,7 +7,8 @@ EXE_INC = \
     -I$(LIB_SRC)/thermophysicalModels/reactionThermo/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/solidThermo/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/solidSpecie/lnInclude \
-    -I$(LIB_SRC)/transportModels/compressible/lnInclude
+    -I$(LIB_SRC)/transportModels/compressible/lnInclude \
+    -I$(LIB_SRC)/transportModels/geometricVoF/lnInclude
 
 LIB_LIBS = \
     -lfiniteVolume \
@@ -15,4 +16,5 @@ LIB_LIBS = \
     -lfluidThermophysicalModels \
     -lreactionThermophysicalModels \
     -lsolidThermo \
-    -lsolidSpecie
+    -lsolidSpecie \
+    -lgeometricVoF

applications/solvers/multiphase/icoReactingMultiphaseInterFoam/massTransferModels/interfaceHeatResistance/interfaceHeatResistance.C

@@ -28,7 +28,7 @@ License
 
 #include "interfaceHeatResistance.H"
 #include "constants.H"
-#include "isoCutCell.H"
+#include "cutCellIso.H"
 #include "volPointInterpolation.H"
 #include "wallPolyPatch.H"
 #include "fvcSmooth.H"
@@ -52,7 +52,7 @@ interfaceHeatResistance<Thermo, OtherThermo>
         volPointInterpolation::New(mesh).interpolate(alpha)
     );
 
-    isoCutCell cutCell(mesh, ap);
+    cutCellIso cutCell(mesh, ap);
 
     forAll(interfaceArea_, celli)
     {
@@ -61,7 +61,7 @@ interfaceHeatResistance<Thermo, OtherThermo>
         if (status == 0) // cell is cut
         {
             interfaceArea_[celli] =
-                mag(cutCell.isoFaceArea())/mesh.V()[celli];
+                mag(cutCell.faceArea())/mesh.V()[celli];
         }
     }
 

applications/solvers/multiphase/icoReactingMultiphaseInterFoam/massTransferModels/kineticGasEvaporation/kineticGasEvaporation.C

@@ -27,7 +27,7 @@ License
 
 #include "kineticGasEvaporation.H"
 #include "constants.H"
-#include "isoCutCell.H"
+#include "cutCellIso.H"
 #include "volPointInterpolation.H"
 #include "wallPolyPatch.H"
 #include "fvcSmooth.H"
@@ -50,7 +50,7 @@ void Foam::meltingEvaporationModels::kineticGasEvaporation<Thermo, OtherThermo>
         volPointInterpolation::New(mesh).interpolate(alpha)
     );
 
-    isoCutCell cutCell(mesh, ap);
+    cutCellIso cutCell(mesh, ap);
 
     forAll(interfaceArea_, celli)
     {
@@ -59,7 +59,7 @@ void Foam::meltingEvaporationModels::kineticGasEvaporation<Thermo, OtherThermo>
         if (status == 0) // cell is cut
         {
             interfaceArea_[celli] =
-                mag(cutCell.isoFaceArea())/mesh.V()[celli];
+                mag(cutCell.faceArea())/mesh.V()[celli];
         }
     }
 

applications/solvers/multiphase/interCondensatingEvaporatingFoam/temperaturePhaseChangeTwoPhaseMixtures/Make/options

@@ -1,16 +1,17 @@
-
 EXE_INC = \
+    -I$(LIB_SRC)/finiteVolume/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/basic/lnInclude \
-    -I$(LIB_SRC)/transportModels/twoPhaseMixture/lnInclude \
     -I$(LIB_SRC)/transportModels \
+    -I$(LIB_SRC)/transportModels/twoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/transportModels/geometricVoF/lnInclude \
     -I$(LIB_SRC)/transportModels/interfaceProperties/lnInclude \
-    -I$(LIB_SRC)/transportModels/incompressible/lnInclude \
-    -I$(LIB_SRC)/finiteVolume/lnInclude
+    -I$(LIB_SRC)/transportModels/incompressible/lnInclude
 
 LIB_LIBS = \
+    -lfiniteVolume \
+    -lgeometricVoF \
     -ltwoPhaseMixture \
     -linterfaceProperties \
     -ltwoPhaseProperties \
     -lincompressibleTransportModels \
-    -lfiniteVolume \
     -lfluidThermophysicalModels

applications/solvers/multiphase/interCondensatingEvaporatingFoam/temperaturePhaseChangeTwoPhaseMixtures/interfaceHeatResistance/interfaceHeatResistance.C

@@ -29,7 +29,7 @@ License
 #include "interfaceHeatResistance.H"
 #include "addToRunTimeSelectionTable.H"
 #include "twoPhaseMixtureEThermo.H"
-#include "isoCutCell.H"
+#include "cutCellIso.H"
 #include "volPointInterpolation.H"
 #include "calculatedFvPatchFields.H"
 #include "wallPolyPatch.H"
@@ -342,7 +342,7 @@ updateInterface()
         volPointInterpolation::New(mesh_).interpolate(mixture_.alpha1())
     );
 
-    isoCutCell cutCell(mesh_, ap);
+    cutCellIso cutCell(mesh_, ap);
 
     forAll(interfaceArea_, celli)
     {
@@ -351,7 +351,7 @@ updateInterface()
         if (status == 0) // cell is cut
         {
             interfaceArea_[celli] =
-                mag(cutCell.isoFaceArea())/mesh_.V()[celli];
+                mag(cutCell.faceArea())/mesh_.V()[celli];
         }
     }
 

applications/solvers/multiphase/interIsoFoam/Make/options

@@ -1,19 +1,26 @@
 EXE_INC = \
+    -I../VoF \
+    -I../interFoam \
     -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/surfMesh/lnInclude \
     -I$(LIB_SRC)/meshTools/lnInclude \
     -I$(LIB_SRC)/sampling/lnInclude \
     -I$(LIB_SRC)/dynamicFvMesh/lnInclude \
+    -I$(LIB_SRC)/dynamicMesh/lnInclude \
     -I$(LIB_SRC)/transportModels \
+    -I$(LIB_SRC)/transportModels/geometricVoF/lnInclude \
     -I$(LIB_SRC)/transportModels/twoPhaseMixture/lnInclude \
     -I$(LIB_SRC)/transportModels/incompressible/lnInclude \
     -I$(LIB_SRC)/transportModels/interfaceProperties/lnInclude \
     -I$(LIB_SRC)/TurbulenceModels/turbulenceModels/lnInclude \
     -I$(LIB_SRC)/TurbulenceModels/incompressible/lnInclude \
-    -I$(LIB_SRC)/transportModels/immiscibleIncompressibleTwoPhaseMixture/lnInclude
+    -I$(LIB_SRC)/transportModels/immiscibleIncompressibleTwoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/transportModels/geometricVoF/lnInclude
 
 EXE_LIBS = \
     -lfiniteVolume \
     -lfvOptions \
+    -lsurfMesh \
     -lmeshTools \
     -lsampling \
     -ldynamicFvMesh \
@@ -22,4 +29,5 @@ EXE_LIBS = \
     -limmiscibleIncompressibleTwoPhaseMixture \
     -lturbulenceModels \
     -lincompressibleTurbulenceModels \
-    -lwaveModels
+    -lwaveModels \
+    -lgeometricVoF

applications/solvers/multiphase/interIsoFoam/UEqn.H

@@ -1,33 +0,0 @@
-    MRF.correctBoundaryVelocity(U);
-
-    fvVectorMatrix UEqn
-    (
-        fvm::ddt(rho, U) + fvm::div(rhoPhi, U)
-      + MRF.DDt(rho, U)
-      + turbulence->divDevRhoReff(rho, U)
-     ==
-        fvOptions(rho, U)
-    );
-
-    UEqn.relax();
-
-    fvOptions.constrain(UEqn);
-
-    if (pimple.momentumPredictor())
-    {
-        solve
-        (
-            UEqn
-         ==
-            fvc::reconstruct
-            (
-                (
-                    mixture.surfaceTensionForce()
-                  - ghf*fvc::snGrad(rho)
-                  - fvc::snGrad(p_rgh)
-                ) * mesh.magSf()
-            )
-        );
-
-        fvOptions.correct(U);
-    }

applications/solvers/multiphase/interIsoFoam/alphaEqn.H

@@ -6,7 +6,8 @@
     }
 
     // Updating alpha1
-    advector.advect();
+    #include "alphaSuSp.H"
+    advector.advect(Sp, Su);
 
     // Making U absolute again after advection step
     if (mesh.moving())

applications/solvers/multiphase/interIsoFoam/correctPhi.H

@@ -1,11 +0,0 @@
-CorrectPhi
-(
-    U,
-    phi,
-    p_rgh,
-    surfaceScalarField("rAUf", fvc::interpolate(rAU())),
-    geometricZeroField(),
-    pimple
-);
-
-#include "continuityErrs.H"

applications/solvers/multiphase/interIsoFoam/initCorrectPhi.H

@@ -1,34 +0,0 @@
-tmp<volScalarField> rAU;
-
-if (correctPhi)
-{
-    rAU = new volScalarField
-    (
-        IOobject
-        (
-            "rAU",
-            runTime.timeName(),
-            mesh,
-            IOobject::READ_IF_PRESENT,
-            IOobject::AUTO_WRITE
-        ),
-        mesh,
-        dimensionedScalar("rAU", dimTime/dimDensity, 1)
-    );
-
-    #include "correctPhi.H"
-}
-else
-{
-    CorrectPhi
-    (
-        U,
-        phi,
-        p_rgh,
-        dimensionedScalar("rAUf", dimTime/rho.dimensions(), 1),
-        geometricZeroField(),
-        pimple
-    );
-
-    #include "continuityErrs.H"
-}

applications/solvers/multiphase/interIsoFoam/interIsoFoam.C

@@ -9,6 +9,7 @@
     Copyright (C) 2016 DHI
     Copyright (C) 2017 OpenCFD Ltd.
     Copyright (C) 2018 Johan Roenby
+    Copyright (C) 2019-2020 DLR
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -63,6 +64,7 @@ Description
 #include "fvOptions.H"
 #include "CorrectPhi.H"
 #include "fvcSmooth.H"
+#include "dynamicRefineFvMesh.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -113,14 +115,29 @@ int main(int argc, char *argv[])
         {
             if (pimple.firstIter() || moveMeshOuterCorrectors)
             {
+                if (isA<dynamicRefineFvMesh>(mesh))
+                {
+                    advector.surf().reconstruct();
+                }
+
                 mesh.update();
 
                 if (mesh.changing())
                 {
-
                     gh = (g & mesh.C()) - ghRef;
                     ghf = (g & mesh.Cf()) - ghRef;
 
+                    if (isA<dynamicRefineFvMesh>(mesh))
+                    {
+                        advector.surf().mapAlphaField();
+                        alpha2 = 1.0 - alpha1;
+                        alpha2.correctBoundaryConditions();
+                        rho == alpha1*rho1 + alpha2*rho2;
+                        rho.correctBoundaryConditions();
+                        rho.oldTime() = rho;
+                        alpha2.oldTime() = alpha2;
+                    }
+
                     MRF.update();
 
                     if (correctPhi)

applications/solvers/multiphase/interIsoFoam/pEqn.H

@@ -1,89 +0,0 @@
-{
-    if (correctPhi)
-    {
-        rAU.ref() = 1.0/UEqn.A();
-    }
-    else
-    {
-        rAU = 1.0/UEqn.A();
-    }
-
-    surfaceScalarField rAUf("rAUf", fvc::interpolate(rAU()));
-    volVectorField HbyA(constrainHbyA(rAU()*UEqn.H(), U, p_rgh));
-    surfaceScalarField phiHbyA
-    (
-        "phiHbyA",
-        fvc::flux(HbyA)
-      + MRF.zeroFilter(fvc::interpolate(rho*rAU())*fvc::ddtCorr(U, phi, Uf))
-    );
-    MRF.makeRelative(phiHbyA);
-
-    if (p_rgh.needReference())
-    {
-        fvc::makeRelative(phiHbyA, U);
-        adjustPhi(phiHbyA, U, p_rgh);
-        fvc::makeAbsolute(phiHbyA, U);
-    }
-
-    surfaceScalarField phig
-    (
-        (
-            mixture.surfaceTensionForce()
-          - ghf*fvc::snGrad(rho)
-        )*rAUf*mesh.magSf()
-    );
-
-    phiHbyA += phig;
-
-    // Update the pressure BCs to ensure flux consistency
-    constrainPressure(p_rgh, U, phiHbyA, rAUf, MRF);
-
-    while (pimple.correctNonOrthogonal())
-    {
-        fvScalarMatrix p_rghEqn
-        (
-            fvm::laplacian(rAUf, p_rgh) == fvc::div(phiHbyA)
-        );
-
-        p_rghEqn.setReference(pRefCell, getRefCellValue(p_rgh, pRefCell));
-
-        p_rghEqn.solve(mesh.solver(p_rgh.select(pimple.finalInnerIter())));
-
-        if (pimple.finalNonOrthogonalIter())
-        {
-            phi = phiHbyA - p_rghEqn.flux();
-
-            p_rgh.relax();
-
-            U = HbyA + rAU()*fvc::reconstruct((phig - p_rghEqn.flux())/rAUf);
-            U.correctBoundaryConditions();
-            fvOptions.correct(U);
-        }
-    }
-
-    #include "continuityErrs.H"
-
-    // Correct Uf if the mesh is moving
-    fvc::correctUf(Uf, U, phi);
-
-    // Make the fluxes relative to the mesh motion
-    fvc::makeRelative(phi, U);
-
-    p == p_rgh + rho*gh;
-
-    if (p_rgh.needReference())
-    {
-        p += dimensionedScalar
-        (
-            "p",
-            p.dimensions(),
-            pRefValue - getRefCellValue(p, pRefCell)
-        );
-        p_rgh = p - rho*gh;
-    }
-
-    if (!correctPhi)
-    {
-        rAU.clear();
-    }
-}

applications/solvers/multiphase/interIsoFoam/rhofs.H

@@ -1,2 +0,0 @@
-const dimensionedScalar& rho1f(rho1);
-const dimensionedScalar& rho2f(rho2);

applications/test/leastSquareGrad/Make/files

@@ -0,0 +1,3 @@
+Test-leastSquareGrad.C
+
+EXE = $(FOAM_USER_APPBIN)/Test-leastSquareGrad

applications/test/leastSquareGrad/Make/options

@@ -0,0 +1,9 @@
+EXE_INC = \
+    -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/meshTools/lnInclude \
+    -I$(LIB_SRC)/sampling/lnInclude
+
+EXE_LIBS = \
+    -lfiniteVolume \
+    -lmeshTools \
+    -lsampling

applications/test/leastSquareGrad/Test-leastSquareGrad.C

@@ -0,0 +1,101 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Application
+    Test-leastSquareGrad
+
+Description
+
+\*---------------------------------------------------------------------------*/
+
+#include "fvCFD.H"
+#include "leastSquareGrad.H"
+#include "labelVector.H"
+#include "Field.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+int main(int argc, char *argv[])
+{
+    labelVector geomDim(1,1,-1);
+
+    leastSquareGrad<scalar> lsGrad("polyDegree1", geomDim);
+
+    List<vector> pos
+    ({
+        {0,0,0},
+        {1,0,0},
+        {-1,0,0},
+        {0,1,0},
+        {0,-1,0},
+        // {1,1,0}
+    });
+
+    List<scalar> values
+    ({
+        0, 1, -1, 1, -1
+        //, 2
+    });
+
+
+    Map<List<vector>> posMap;
+
+    posMap.insert(0, pos);
+    posMap.insert(1, pos);
+    posMap.insert(2, pos);
+
+    Map<List<scalar>> valMap;
+
+    valMap.insert(0, values);
+    valMap.insert(1, values);
+    valMap.insert(2, values);
+
+    Info<< lsGrad.grad(posMap, valMap) << nl;
+
+
+    leastSquareGrad<vector> lsGradVec("polyDegree1", geomDim);
+
+    List<vector> valuesVec
+    ({
+        {0,0,0},
+        {1,0,0},
+        {-1,0,0},
+        {1,0,0},
+        {-1,0,0}
+    });
+
+    Map<List<vector>> valMapVec;
+
+    valMapVec.insert(0, valuesVec);
+    valMapVec.insert(1, valuesVec);
+    valMapVec.insert(2, valuesVec);
+
+    Info<< lsGradVec.grad(posMap,valMapVec) << nl;
+
+    return 0;
+}
+
+
+// ************************************************************************* //

applications/test/multiDimPolyFitter/Make/files

@@ -0,0 +1,3 @@
+Test-multiDimPolyFitter.C
+
+EXE = $(FOAM_USER_APPBIN)/Test-multiDimPolyFitter

applications/test/multiDimPolyFitter/Make/options

@@ -0,0 +1,9 @@
+EXE_INC = \
+    -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/meshTools/lnInclude \
+    -I$(LIB_SRC)/sampling/lnInclude
+
+EXE_LIBS = \
+    -lfiniteVolume \
+    -lmeshTools \
+    -lsampling

applications/test/multiDimPolyFitter/Test-multiDimPolyFitter.C

@@ -0,0 +1,113 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Application
+    Test-multiDimPolyFitter
+
+Description
+
+\*---------------------------------------------------------------------------*/
+
+#include "fvCFD.H"
+#include "multiDimPolyFitter.H"
+#include "labelVector.H"
+#include "Field.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+int main(int argc, char *argv[])
+{
+    labelVector test(1,-1,-1);
+
+    autoPtr<multiDimPolyFunctions> polyFunc
+        = multiDimPolyFunctions::New("polyDegree1", test);
+
+    vector vec(1,2,3);
+
+    Info<< "polyFunc" << nl
+        << "    nTerms " << polyFunc->nTerms() << nl
+        << "    coeffs " << polyFunc->coeffs() << nl
+        << "    termValues " << polyFunc->termValues(vec) << nl;
+
+    multiDimPolyFitter<scalar> polyFitter("polyDegree1",test);
+
+    List<vector> pos
+    ({
+        {0,0,0},
+        {1,0,0},
+        {-1,0,0}
+    });
+
+    List<scalar> values
+    ({
+        1, 2, 0
+    });
+
+    Info<< "pos " << pos << nl
+        << "values " << values  << nl;
+
+    scalarField fitData = polyFitter.fitData(pos, values);
+
+    Info<< "fitData " << fitData  << nl;
+
+    autoPtr<multiDimPolyFunctions> polyFuncDeg2
+        = multiDimPolyFunctions::New("polyDegree2", labelVector(1,1,-1));
+
+    //vector vec(1,2,3);
+
+    Info<< "polyFunc" << nl
+        << "    nTerms" << polyFuncDeg2->nTerms()  << nl
+        // << "    coeffs " << polyFunc->coeffs()  << nl
+        << "    termValues " << polyFuncDeg2->termValues(vector(1,1,0)) << nl;
+
+    List<vector> pos2
+    ({
+        {0,0,0},
+        {1,0,0},
+        {-1,0,0},
+        {0,1,0},
+        {0,-1,0},
+        {1,1,0}
+    });
+
+    List<scalar> values2
+    ({
+        0, 1, 1, 1, 1, 2
+    });
+
+    multiDimPolyFitter<scalar> polyFitter2
+    {
+        "polyDegree2", labelVector(1,1,-1)
+    };
+
+    scalarField fitData2 = polyFitter2.fitData(pos2, values2);
+
+    Info<< "fitData " << fitData2  << nl;
+
+    return 0;
+}
+
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/Make/files

@@ -0,0 +1,3 @@
+Test-reconstructedDistanceFunction.C
+
+EXE = $(FOAM_USER_APPBIN)/Test-reconstructedDistanceFunction

applications/test/reconstructedDistanceFunction/Make/options

@@ -0,0 +1,11 @@
+EXE_INC = \
+    -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/meshTools/lnInclude \
+    -I$(LIB_SRC)/sampling/lnInclude \
+    -I$(LIB_SRC)/transportModels/geometricVoF/lnInclude
+
+EXE_LIBS = \
+    -lfiniteVolume \
+    -lmeshTools \
+    -lsampling \
+    -lgeometricVoF

applications/test/reconstructedDistanceFunction/Test-reconstructedDistanceFunction.C

@@ -0,0 +1,139 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           |  www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Application
+
+Description
+
+\*---------------------------------------------------------------------------*/
+
+#include "fvCFD.H"
+#include "reconstructionSchemes.H"
+#include "reconstructedDistanceFunction.H"
+#include "Field.H"
+#include "DynamicField.H"
+#include "zoneDistribute.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+int main(int argc, char *argv[])
+{
+    #include "setRootCase.H"
+    #include "createTime.H"
+    #include "createMesh.H"
+
+    Info<< "Reading field alpha1\n" << endl;
+
+    volScalarField alpha1
+    (
+        IOobject
+        (
+            "alpha1",
+            runTime.timeName(),
+            mesh,
+            IOobject::MUST_READ,
+            IOobject::AUTO_WRITE
+        ),
+        mesh
+    );
+
+    Info<< "Reading field U\n" << endl;
+    volVectorField U
+    (
+        IOobject
+        (
+            "U",
+            runTime.timeName(),
+            mesh,
+            IOobject::MUST_READ,
+            IOobject::AUTO_WRITE
+        ),
+        mesh
+    );
+
+    Info<< "create field phi\n" << endl;
+    surfaceScalarField phi = fvc::interpolate(U) & mesh.Sf();
+
+    dictionary dict = mesh.solverDict(alpha1.name());
+
+    autoPtr<reconstructionSchemes> surf =
+        reconstructionSchemes::New(alpha1,phi,U,dict);
+
+    ++runTime;
+
+    const volVectorField& centre = surf->centre();
+    const volVectorField& normal = surf->normal();
+
+
+    //pointField centres(0);
+    //vectorField normals(0);
+    DynamicField<point> centres(1000);
+    DynamicField<vector> normals(1000);
+
+    surf->reconstruct();
+
+    zoneDistribute exchangeFields_(mesh);
+
+    exchangeFields_.setUpCommforZone(surf->interfaceCell());
+
+    Map<Field<vector>> mapCentres =
+        exchangeFields_.getFields(surf->interfaceCell(),centre);
+
+    Map<Field<vector>> mapNormal =
+        exchangeFields_.getFields(surf->interfaceCell(),normal);
+
+    forAll(surf->centre(),celli)
+    {
+        if (surf->interfaceCell()[celli])
+        {
+            centres.append(surf->centre()[celli]);
+            normals.append(surf->normal()[celli]);
+        }
+    }
+
+    reconstructedDistanceFunction distFunc(mesh);
+
+    {
+        runTime.cpuTimeIncrement();
+
+        Info<< "Time " << runTime.cpuTimeIncrement()  << endl;
+
+        distFunc.constructRDF
+        (
+            surf->interfaceCell(),
+            surf->centre(),
+            surf->normal(),
+            2,
+            exchangeFields_
+        );
+    }
+
+    runTime.write();
+
+    return 0;
+}
+
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/0.orig/U

@@ -0,0 +1,39 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volVectorField;
+    location    "0";
+    object      U;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 1 -1 0 0 0 0];
+
+internalField   uniform (0 0 0);
+
+boundaryField
+{
+    walls
+    {
+        type            zeroGradient;
+    }
+    front
+    {
+        type            empty;
+    }
+    back
+    {
+        type            empty;
+    }
+}
+
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/0.orig/alpha1

@@ -0,0 +1,39 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volScalarField;
+    location    "0";
+    object      alpha1;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 0 0 0 0 0 0];
+
+internalField   uniform 0;
+
+boundaryField
+{
+    walls
+    {
+        type            zeroGradient;
+    }
+    front
+    {
+        type            empty;
+    }
+    back
+    {
+        type            empty;
+    }
+}
+
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/0.orig/markedCells

@@ -0,0 +1,40 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volScalarField;
+    location    "0";
+    object      markedCells;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 0 0 0 0 0 0];
+
+internalField   uniform 0;
+
+boundaryField
+{
+    walls
+    {
+        type            calculated;
+        value           uniform 0;
+    }
+    front
+    {
+        type            empty;
+    }
+    back
+    {
+        type            empty;
+    }
+}
+
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/Allclean

@@ -0,0 +1,9 @@
+#!/bin/sh
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/CleanFunctions      # Tutorial clean functions
+#------------------------------------------------------------------------------
+
+cleanCase0
+rm -rf AlphaInit/
+
+#------------------------------------------------------------------------------

applications/test/reconstructedDistanceFunction/case1/Allrun

@@ -0,0 +1,13 @@
+#!/bin/sh
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/RunFunctions        # Tutorial run functions
+#------------------------------------------------------------------------------
+
+restore0Dir
+touch Test-reconDistFunc.foam
+
+runApplication blockMesh
+runApplication setAlphaField
+runApplication Test-reconstructedDistanceFunction
+
+#------------------------------------------------------------------------------

applications/test/reconstructedDistanceFunction/case1/constant/g

@@ -0,0 +1,21 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       uniformDimensionedVectorField;
+    location    "constant";
+    object      g;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 1 -2 0 0 0 0];
+value           ( 0 -9.81 0 );
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/constant/transportProperties

@@ -0,0 +1,64 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      transportProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+DT              [ 0 2 -1 0 0 0 0 ] 0;
+
+sigma           [ 1 0 -2 0 0 0 0 ] 0;
+
+phase1
+{
+    transportModel  Newtonian;
+    nu              [ 0 2 -1 0 0 0 0 ] 0;
+    rho             [ 1 -3 0 0 0 0 0 ] 1000;
+    BirdCarreauCoeffs
+    {
+        nu0             [ 0 2 -1 0 0 0 0 ] 0.0142515;
+        nuInf           [ 0 2 -1 0 0 0 0 ] 1e-06;
+        k               [ 0 0 1 0 0 0 0 ] 99.6;
+        n               [ 0 0 0 0 0 0 0 ] 0.1003;
+    }
+    CrossPowerLawCoeffs
+    {
+        nu0             [ 0 2 -1 0 0 0 0 ] 1e-06;
+        nuInf           [ 0 2 -1 0 0 0 0 ] 1e-06;
+        m               [ 0 0 1 0 0 0 0 ] 1;
+        n               [ 0 0 0 0 0 0 0 ] 0;
+    }
+}
+
+phase2
+{
+    transportModel  Newtonian;
+    nu              [ 0 2 -1 0 0 0 0 ] 0;
+    rho             [ 1 -3 0 0 0 0 0 ] 1;
+    BirdCarreauCoeffs
+    {
+        nu0             [ 0 2 -1 0 0 0 0 ] 0.0142515;
+        nuInf           [ 0 2 -1 0 0 0 0 ] 1e-06;
+        k               [ 0 0 1 0 0 0 0 ] 99.6;
+        n               [ 0 0 0 0 0 0 0 ] 0.1003;
+    }
+    CrossPowerLawCoeffs
+    {
+        nu0             [ 0 2 -1 0 0 0 0 ] 1e-06;
+        nuInf           [ 0 2 -1 0 0 0 0 ] 1e-06;
+        m               [ 0 0 1 0 0 0 0 ] 1;
+        n               [ 0 0 0 0 0 0 0 ] 0;
+    }
+}
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/constant/turbulenceProperties

@@ -0,0 +1,20 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      turbulenceProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+simulationType  laminar;
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/system/blockMeshDict

@@ -0,0 +1,89 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      blockMeshDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+scale   1;
+
+L       1;
+n       3;
+
+y1      0;
+y2      1;
+
+H       0.1;
+
+
+vertices
+(
+    (0 $y1 0)
+    ($L $y1 0)
+    ($L $y2 0)
+    (0 $y2 0)
+    (0 $y1 $H)
+    ($L $y1 $H)
+    ($L $y2 $H)
+    (0 $y2 $H)
+);
+
+blocks
+(
+    hex (0 1 2 3 4 5 6 7) (100 100 1) simpleGrading (1 1 1)
+);
+
+edges
+(
+);
+
+boundary
+(
+    walls
+    {
+        type patch;
+        faces
+        (
+            (4 5 6 7)
+            (0 4 7 3)
+            (1 2 6 5)
+            (0 3 2 1)
+            // (2 3 7 6)
+            // (0 1 5 4)
+        );
+    }
+
+    front
+    {
+        type empty;
+        faces
+        (
+            (2 3 7 6)
+        );
+    }
+
+    back
+    {
+        type empty;
+        faces
+        (
+            (0 1 5 4)
+        );
+    }
+
+);
+
+mergePatchPairs
+(
+);
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/system/changeDictionaryDict

@@ -0,0 +1,30 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      changeDictionaryDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+boundary
+{
+    front
+    {
+        type            empty;
+    }
+
+    back
+    {
+        type            empty;
+    }
+}
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/system/controlDict

@@ -0,0 +1,59 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version         2.0;
+    format          ascii;
+    class           dictionary;
+    location        "system";
+    object          controlDict;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+application     Test-reconstructedDistanceFunction;
+
+startFrom       startTime;
+
+startTime       0.0;
+
+stopAt          writeNow;
+
+endTime         4;
+
+writeControl    adjustableRunTime;
+
+writeInterval   0.1;
+
+deltaT          1e-3;
+
+purgeWrite      0;
+
+writeFormat     ascii;
+
+writePrecision  14;
+
+writeCompression no;
+
+timeFormat      general;
+
+timePrecision   14;
+
+graphFormat     raw;
+
+runTimeModifiable no;
+
+adjustTimeStep  yes;
+
+maxCo           1e6;
+
+maxAlphaCo      0.5;
+
+maxDeltaT       1e6;
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/system/decomposeParDict

@@ -0,0 +1,27 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      decomposeParDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+numberOfSubdomains 4;
+
+method      simple;
+
+coeffs
+{
+    n       (2 2 1);
+}
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/system/fvSchemes

@@ -0,0 +1,62 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+ddtSchemes
+{
+    default         Euler;
+}
+
+gradSchemes
+{
+    //default         Gauss linear;
+    default        pointCellsLeastSquares;
+}
+
+divSchemes
+{
+    div(rho*phi,U)  Gauss limitedLinearV 1;
+    div(phi,alpha)  Gauss vanLeer;
+    div(phi,alpha1)  Gauss HRIC;
+    div(phirb,alpha) Gauss interfaceCompression;
+    div((muEff*dev(T(grad(U))))) Gauss linear;
+}
+
+laplacianSchemes
+{
+    default         Gauss linear corrected;
+}
+
+interpolationSchemes
+{
+    default         linear;
+}
+
+snGradSchemes
+{
+    default         corrected;
+}
+
+fluxRequired
+{
+    default         no;
+    p_rgh;
+    pcorr;
+    alpha1;
+}
+
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/system/fvSolution

@@ -0,0 +1,48 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+solvers
+{
+    alpha1
+    {
+
+        reconstructionScheme isoAlpha;
+        vof2IsoTol 1e-8;
+        surfCellTol 1e-8;
+        writeVTK    false;
+    }
+}
+
+
+PIMPLE
+{
+    momentumPredictor no;
+    nCorrectors     -1;
+    nNonOrthogonalCorrectors -1;
+    nAlphaCorr      1;
+    nAlphaSubCycles 1;
+    cAlpha          1;
+    pRefCell        0;
+    pRefValue       0;
+}
+
+SIMPLE
+{
+    nNonOrthogonalCorrectors 0;
+}
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/system/isoSurfDict

@@ -0,0 +1,23 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+field   "alpha1";
+type    sphere;
+centre  (0.51 0.51 0.51);
+radius  0.25;
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/system/setAlphaFieldDict

@@ -0,0 +1,23 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+field   "alpha1";
+type    plane;
+origin  (0.485 0.0 0.0);
+normal  (-1 0 0);
+
+// ************************************************************************* //

applications/test/reconstructedDistanceFunction/case1/system/topoSetDict

@@ -0,0 +1,34 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      topoSetDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+actions
+(
+    {
+        name    c0;
+        type    cellSet;
+        action  new;
+        source  boxToCell;
+        box     (-1e10 -1e10 -1e10) (1e10 0 1e10);
+    }
+
+    {
+        name    c0;
+        type    cellSet;
+        action  invert;
+    }
+);
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/0.orig/T

@@ -0,0 +1,34 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volScalarField;
+    object      T;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 0 0 1 0 0 0];
+
+internalField   uniform 300;
+
+boundaryField
+{
+    walls
+    {
+        type            zeroGradient;
+    }
+
+    defaultFaces
+    {
+        type            empty;
+    }
+}
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/0.orig/U

@@ -0,0 +1,33 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volVectorField;
+    object      U;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 1 -1 0 0 0 0];
+
+internalField   uniform (0 0 0);
+
+boundaryField
+{
+    walls
+    {
+        type            noSlip;
+    }
+    frontAndBack
+    {
+        type            empty;
+    }
+}
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/0.orig/alpha.water

@@ -0,0 +1,34 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volScalarField;
+    object      alpha.water;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 0 0 0 0 0 0];
+
+internalField   uniform 0;
+
+boundaryField
+{
+    walls
+    {
+        type            zeroGradient;
+    }
+
+    defaultFaces
+    {
+        type            empty;
+    }
+}
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/0.orig/p

@@ -0,0 +1,35 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volScalarField;
+    object      p;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [1 -1 -2 0 0 0 0];
+
+internalField   uniform 1e5;
+
+boundaryField
+{
+    walls
+    {
+        type            calculated;
+        value           uniform 1e5;
+    }
+
+    defaultFaces
+    {
+        type            empty;
+    }
+}
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/0.orig/p_rgh

@@ -0,0 +1,35 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       volScalarField;
+    object      p_rgh;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [1 -1 -2 0 0 0 0];
+
+internalField   uniform 1e5;
+
+boundaryField
+{
+    walls
+    {
+        type            fixedFluxPressure;
+        value           uniform 1e5;
+    }
+
+    defaultFaces
+    {
+        type            empty;
+    }
+}
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/Allclean

@@ -0,0 +1,10 @@
+#!/bin/sh
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/CleanFunctions      # Tutorial clean functions
+#------------------------------------------------------------------------------
+
+cleanCase0
+rm -rf processor*
+rm -r AlphaInit/
+
+#------------------------------------------------------------------------------

applications/test/setAlphaField/case1/Allrun

@@ -0,0 +1,15 @@
+#!/bin/sh
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/RunFunctions        # Tutorial run functions
+#------------------------------------------------------------------------------
+
+runApplication blockMesh
+#runApplication refineMesh -overwrite
+touch test-initAlphaField.foam
+restore0Dir
+runApplication setAlphaField
+#runApplication decomposePar
+#runParallel $(getApplication)
+#runApplication reconstructPar
+
+#------------------------------------------------------------------------------

applications/test/setAlphaField/case1/constant/g

@@ -0,0 +1,21 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       uniformDimensionedVectorField;
+    location    "constant";
+    object      g;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+dimensions      [0 1 -2 0 0 0 0];
+value           (0 -9.81 0);
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/constant/thermophysicalProperties

@@ -0,0 +1,24 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      thermophysicalProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+phases (water air);
+
+pMin        10000;
+
+sigma       0.07;
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/constant/thermophysicalProperties.air

@@ -0,0 +1,48 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      thermophysicalProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+thermoType
+{
+    type            heRhoThermo;
+    mixture         pureMixture;
+    transport       const;
+    thermo          hConst;
+    equationOfState perfectGas;
+    specie          specie;
+    energy          sensibleInternalEnergy;
+}
+
+mixture
+{
+    specie
+    {
+        molWeight   28.9;
+    }
+    thermodynamics
+    {
+        Cp          1007;
+        Hf          0;
+    }
+    transport
+    {
+        mu          1.84e-05;
+        Pr          0.7;
+    }
+}
+
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/constant/thermophysicalProperties.water

@@ -0,0 +1,53 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      thermophysicalProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+thermoType
+{
+    type            heRhoThermo;
+    mixture         pureMixture;
+    transport       const;
+    thermo          hConst;
+    equationOfState perfectFluid;
+    specie          specie;
+    energy          sensibleInternalEnergy;
+}
+
+mixture
+{
+    specie
+    {
+        molWeight   18.0;
+    }
+    equationOfState
+    {
+        R           3000;
+        rho0        1027;
+    }
+    thermodynamics
+    {
+        Cp          4195;
+        Hf          0;
+    }
+    transport
+    {
+        mu          3.645e-4;
+        Pr          2.289;
+    }
+}
+
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/constant/turbulenceProperties

@@ -0,0 +1,21 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      turbulenceProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+simulationType  laminar;
+
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/system/blockMeshDict

@@ -0,0 +1,53 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      blockMeshDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+scale   1;
+
+vertices
+(
+    (0 0 0)
+    (1 0 0)
+    (1 2 0)
+    (0 2 0)
+    (0 0 1)
+    (1 0 1)
+    (1 2 1)
+    (0 2 1)
+);
+
+blocks
+(
+    hex (0 1 2 3 4 5 6 7) (20 40 20) simpleGrading (1 1 1)
+);
+
+boundary
+(
+    walls
+    {
+        type wall;
+        faces
+        (
+            (3 7 6 2)
+            (0 4 7 3)
+            (2 6 5 1)
+            (1 5 4 0)
+            (0 3 2 1)
+            (4 5 6 7)
+        );
+    }
+);
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/system/controlDict

@@ -0,0 +1,55 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      controlDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+application     setAlphaField;
+
+startFrom       latestTime;
+
+startTime       0;
+
+stopAt          endTime;
+
+endTime         0.1;
+
+deltaT          0.0001;
+
+writeControl    adjustableRunTime;
+
+writeInterval   0.01;
+
+purgeWrite      0;
+
+writeFormat     ascii;
+
+writePrecision  8;
+
+writeCompression off;
+
+timeFormat      general;
+
+timePrecision   10;
+
+runTimeModifiable yes;
+
+adjustTimeStep  yes;
+
+maxCo           0.5;
+maxAlphaCo      0.5;
+maxDeltaT       1;
+
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/system/decomposeParDict

@@ -0,0 +1,33 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      decomposeParDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+numberOfSubdomains 64;
+
+method          scotch;
+
+coeffs
+{
+    n           (1 4 1);
+    //delta       0.001; // default=0.001
+    //order       xyz;   // default=xzy
+}
+
+distributed     no;
+
+roots           ( );
+
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/system/fvSchemes

@@ -0,0 +1,57 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+ddtSchemes
+{
+    default         Euler;
+}
+
+gradSchemes
+{
+    default         Gauss linear;
+}
+
+divSchemes
+{
+    div(phi,alpha)  Gauss vanLeer;
+    div(phirb,alpha) Gauss linear;
+
+    div(rhoPhi,U)  Gauss upwind;
+    div(rhoPhi,T)  Gauss upwind;
+    div(rhoPhi,K)  Gauss upwind;
+    div(phi,p)      Gauss upwind;
+    div(phi,k)      Gauss upwind;
+
+    div(((rho*nuEff)*dev2(T(grad(U))))) Gauss linear;
+}
+
+laplacianSchemes
+{
+    default         Gauss linear uncorrected;
+}
+
+interpolationSchemes
+{
+    default         linear;
+}
+
+snGradSchemes
+{
+    default         uncorrected;
+}
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/system/fvSolution

@@ -0,0 +1,108 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v2006                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+solvers
+{
+    "alpha.water.*"
+    {
+        nAlphaCorr      1;
+        nAlphaSubCycles 2;
+        cAlpha          1;
+
+        MULESCorr       no;
+        nLimiterIter    5;
+
+        solver          smoothSolver;
+        smoother        symGaussSeidel;
+        tolerance       1e-8;
+        relTol          0;
+    }
+
+    "pcorr.*"
+    {
+        solver          PCG;
+        preconditioner
+        {
+            preconditioner  GAMG;
+            tolerance       1e-05;
+            relTol          0;
+            smoother        DICGaussSeidel;
+        }
+        tolerance       1e-05;
+        relTol          0;
+        maxIter         100;
+    }
+
+    ".*(rho|rhoFinal)"
+    {
+        solver          diagonal;
+    }
+
+    p_rgh
+    {
+        solver          GAMG;
+        tolerance       1e-07;
+        relTol          0.01;
+        smoother        DIC;
+    }
+
+    p_rghFinal
+    {
+        solver          PCG;
+        preconditioner
+        {
+            preconditioner  GAMG;
+            tolerance       1e-07;
+            relTol          0;
+            nVcycles        2;
+            smoother        DICGaussSeidel;
+            nPreSweeps      2;
+        }
+        tolerance       1e-07;
+        relTol          0;
+        maxIter         20;
+    }
+
+    U
+    {
+        solver          smoothSolver;
+        smoother        GaussSeidel;
+        tolerance       1e-06;
+        relTol          0;
+        nSweeps         1;
+    }
+
+    "(T|k|B|nuTilda).*"
+    {
+        solver          smoothSolver;
+        smoother        symGaussSeidel;
+        tolerance       1e-08;
+        relTol          0;
+    }
+}
+
+PIMPLE
+{
+    momentumPredictor no;
+    transonic       no;
+    nOuterCorrectors 1;
+    nCorrectors     2;
+    nNonOrthogonalCorrectors 0;
+}
+
+
+// ************************************************************************* //

applications/test/setAlphaField/case1/system/setAlphaFieldDict

@@ -0,0 +1,48 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v1912                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+field "alpha.water";
+
+type composedFunction;
+mode minDist;
+composedFunctions
+{
+    plane
+    {
+        type plane;
+        origin (0 1. 0);
+        normal (0 -1 0);
+    }
+
+    sphere
+    {
+        type sphere;
+        radius 0.4;
+        origin (0.5 1.5 0.5);
+        scale 1;
+    }
+
+    sphere2
+    {
+        type sphere;
+        radius 0.4;
+        origin (0.5 0.5 0.5);
+        scale -1;
+    }
+}
+
+// ************************************************************************* //

applications/test/zoneDistribute/Make/files

@@ -0,0 +1,3 @@
+Test-zoneDistribute.C
+
+EXE = $(FOAM_USER_APPBIN)/Test-zoneDistribute

applications/test/zoneDistribute/Make/options

@@ -0,0 +1,13 @@
+EXE_INC = \
+    -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/fileFormats/lnInclude \
+    -I$(LIB_SRC)/surfMesh/lnInclude \
+    -I$(LIB_SRC)/meshTools/lnInclude \
+    -I$(LIB_SRC)/sampling/lnInclude
+
+EXE_LIBS = \
+    -lfiniteVolume \
+    -lfileFormats \
+    -lsurfMesh \
+    -lmeshTools \
+    -lsampling

applications/test/zoneDistribute/Test-zoneDistribute.C

@@ -0,0 +1,121 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Application
+    Test-zoneDistribute
+
+Description
+    Test of zoneDistribute validated with mapDistribute
+
+    Original code supplied by Henning Scheufler, DLR (2019)
+
+\*---------------------------------------------------------------------------*/
+
+#include "fvCFD.H"
+#include "centredCPCCellToCellStencilObject.H"
+#include "zoneDistribute.H"
+
+#include "SortableList.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+int main(int argc, char *argv[])
+{
+    #include "setRootCase.H"
+    #include "createTime.H"
+    #include "createMesh.H"
+
+    const extendedCentredCellToCellStencil& stencil =
+        centredCPCCellToCellStencilObject::New(mesh);
+
+    const List<List<label>>& stencilAddr = stencil.stencil();
+
+    List<List<vector>> stencilCentre(mesh.nCells());
+
+    stencil.collectData
+    (
+       mesh.C(),
+       stencilCentre
+    );
+
+    zoneDistribute exchangeFields(mesh);
+
+
+    boolList interfaceCell(mesh.nCells(),true);
+    exchangeFields.setUpCommforZone(interfaceCell);
+
+
+    const labelListList& stencil_zoneDist = exchangeFields.getStencil();
+    const globalIndex& gblNumbering = exchangeFields.globalNumbering();
+
+    Map<vectorField> mapCC(exchangeFields.getFields(interfaceCell,mesh.C()));
+
+    // compare stencils
+    Pout<< "size of the stencil match "
+        << (stencilAddr.size() == stencil_zoneDist.size()) << endl;
+
+    label stencilMatch = 0;
+
+    forAll(stencilAddr,celli)
+    {
+        const vectorField& neiCC = mapCC[celli];
+        if (neiCC.size() != stencilCentre[celli].size())
+        {
+            continue;
+        }
+
+        bool foundAllLabel = true;
+        for (const vector& cc : neiCC)
+        {
+            if (!stencilCentre[celli].found(cc))
+            {
+                foundAllLabel = false;
+                break;
+            }
+        }
+
+        if (foundAllLabel)
+        {
+            ++stencilMatch;
+        }
+
+    }
+
+    if (stencilMatch == mesh.nCells())
+    {
+        Pout << "all Values are identical "  << endl;
+    }
+    else
+    {
+        Pout << "values did not match in : " << stencilMatch << " of "
+             << mesh.nCells() << " cases" << endl;
+    }
+
+    return 0;
+}
+
+
+// ************************************************************************* //

applications/test/zoneDistribute/case1/Allclean

@@ -0,0 +1,15 @@
+#!/bin/sh
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/CleanFunctions      # Tutorial clean functions
+#------------------------------------------------------------------------------
+
+cleanCase0
+
+rm -f ./flange ./*.obj
+
+# Remove surface and features
+rm -f constant/triSurface/flange.stl.gz
+rm -f constant/triSurface/flange.eMesh
+rm -rf constant/extendedFeatureEdgeMesh
+
+#------------------------------------------------------------------------------

applications/test/zoneDistribute/case1/Allrun

@@ -0,0 +1,13 @@
+#!/bin/sh
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/bin/tools/RunFunctions        # Tutorial run functions
+#------------------------------------------------------------------------------
+
+touch test-zoneDistribute.foam
+runApplication blockMesh
+#runApplication surfaceFeatureExtract
+runApplication snappyHexMesh -overwrite
+runApplication decomposePar
+runParallel test-zoneDistribute
+
+#------------------------------------------------------------------------------

applications/test/zoneDistribute/case1/constant/triSurface/README

@@ -0,0 +1,4 @@
+Directory to house tri-surfaces
+
+The Allrun script copies the surface from the $FOAM_TUTORIALS/resources/geometry
+directory

applications/test/zoneDistribute/case1/system/blockMeshDict

@@ -0,0 +1,57 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v1912                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      blockMeshDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+scale   1;
+
+vertices
+(
+    ( -1 -1 -1)
+    (  1 -1 -1)
+    (  1  1 -1)
+    ( -1  1 -1)
+    ( -1 -1 1)
+    (  1 -1 1)
+    (  1  1 1)
+    ( -1  1 1)
+);
+
+blocks
+(
+    hex (0 1 2 3 4 5 6 7) (10 10 10) simpleGrading (1 1 1)
+);
+
+edges
+(
+);
+
+boundary
+(
+    allBoundary
+    {
+        type patch;
+        faces
+        (
+            (3 7 6 2)
+            (0 4 7 3)
+            (2 6 5 1)
+            (1 5 4 0)
+            (0 3 2 1)
+            (4 5 6 7)
+        );
+    }
+);
+
+// ************************************************************************* //

applications/test/zoneDistribute/case1/system/controlDict

@@ -0,0 +1,49 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v1912                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      controlDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+application     snappyHexMesh;
+
+startFrom       startTime;
+
+startTime       0;
+
+stopAt          endTime;
+
+endTime         50;
+
+deltaT          1;
+
+writeControl    timeStep;
+
+writeInterval   20;
+
+purgeWrite      0;
+
+writeFormat     ascii;
+
+writePrecision  6;
+
+writeCompression off;
+
+timeFormat      general;
+
+timePrecision   6;
+
+runTimeModifiable yes;
+
+
+// ************************************************************************* //

applications/test/zoneDistribute/case1/system/decomposeParDict

@@ -0,0 +1,27 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v1912                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      decomposeParDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+numberOfSubdomains 8;
+
+method          simple;
+
+coeffs
+{
+    n           (4 2 1);
+}
+
+
+// ************************************************************************* //

applications/test/zoneDistribute/case1/system/fvSchemes

@@ -0,0 +1,30 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v1912                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      fvSchemes;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+gradSchemes
+{
+}
+
+divSchemes
+{
+}
+
+laplacianSchemes
+{
+}
+
+// ************************************************************************* //

applications/test/zoneDistribute/case1/system/fvSolution

@@ -0,0 +1,18 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v1912                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      fvSolution;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+// ************************************************************************* //

applications/test/zoneDistribute/case1/system/meshQualityDict

@@ -0,0 +1,22 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v1912                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      meshQualityDict;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+// Include defaults parameters from master dictionary
+#includeEtc "caseDicts/meshQualityDict"
+
+
+// ************************************************************************* //

applications/test/zoneDistribute/case1/system/snappyHexMeshDict

@@ -0,0 +1,310 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v1912                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      snappyHexMeshDict;
+}
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+// Which of the steps to run
+castellatedMesh true;
+snap            true;
+addLayers       false;
+
+
+// Geometry. Definition of all surfaces. All surfaces are of class
+// searchableSurface.
+// Surfaces are used
+// - to specify refinement for any mesh cell intersecting it
+// - to specify refinement for any mesh cell inside/outside/near
+// - to 'snap' the mesh boundary to the surface
+geometry
+{
+
+    //- Refine a bit extra around the small centre hole
+    sphere
+    {
+        type    sphere;
+        origin  (0 0 -0.00);
+        radius  0.99;
+    }
+}
+
+
+// Settings for the castellatedMesh generation.
+castellatedMeshControls
+{
+
+    // Refinement parameters
+    // ~~~~~~~~~~~~~~~~~~~~~
+
+    // If local number of cells is >= maxLocalCells on any processor
+    // switches from from refinement followed by balancing
+    // (current method) to (weighted) balancing before refinement.
+    maxLocalCells 100000;
+
+    // Overall cell limit (approximately). Refinement will stop immediately
+    // upon reaching this number so a refinement level might not complete.
+    // Note that this is the number of cells before removing the part which
+    // is not 'visible' from the keepPoint. The final number of cells might
+    // actually be a lot less.
+    maxGlobalCells 2000000;
+
+    // The surface refinement loop might spend lots of iterations refining just a
+    // few cells. This setting will cause refinement to stop if <= minimumRefine
+    // are selected for refinement. Note: it will at least do one iteration
+    // (unless the number of cells to refine is 0)
+    minRefinementCells 0;
+
+    // Number of buffer layers between different levels.
+    // 1 means normal 2:1 refinement restriction, larger means slower
+    // refinement.
+    nCellsBetweenLevels 1;
+
+
+
+    // Explicit feature edge refinement
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    // Specifies a level for any cell intersected by its edges.
+    // This is a featureEdgeMesh, read from constant/triSurface for now.
+    features
+    (
+
+    );
+
+
+
+    // Surface based refinement
+    // ~~~~~~~~~~~~~~~~~~~~~~~~
+
+    // Specifies two levels for every surface. The first is the minimum level,
+    // every cell intersecting a surface gets refined up to the minimum level.
+    // The second level is the maximum level. Cells that 'see' multiple
+    // intersections where the intersections make an
+    // angle > resolveFeatureAngle get refined up to the maximum level.
+
+    refinementSurfaces
+    {
+        sphere
+        {
+            // Surface-wise min and max refinement level
+            level (2 2);
+        }
+    }
+
+    resolveFeatureAngle 30;
+
+
+    // Region-wise refinement
+    // ~~~~~~~~~~~~~~~~~~~~~~
+
+    // Specifies refinement level for cells in relation to a surface. One of
+    // three modes
+    // - distance. 'levels' specifies per distance to the surface the
+    //   wanted refinement level. The distances need to be specified in
+    //   descending order.
+    // - inside. 'levels' is only one entry and only the level is used. All
+    //   cells inside the surface get refined up to the level. The surface
+    //   needs to be closed for this to be possible.
+    // - outside. Same but cells outside.
+
+    refinementRegions
+    {
+        // refineHole
+        // {
+        //     mode inside;
+        //     levels ((1E15 3));
+        // }
+    }
+
+
+    // Mesh selection
+    // ~~~~~~~~~~~~~~
+
+    // After refinement patches get added for all refinementSurfaces and
+    // all cells intersecting the surfaces get put into these patches. The
+    // section reachable from the locationInMesh is kept.
+    // NOTE: This point should never be on a face, always inside a cell, even
+    // after refinement.
+    // This is an outside point locationInMesh (-0.033 -0.033 0.0033);
+    locationInMesh (0 0 0); // Inside point
+
+    // Whether any faceZones (as specified in the refinementSurfaces)
+    // are only on the boundary of corresponding cellZones or also allow
+    // free-standing zone faces. Not used if there are no faceZones.
+    allowFreeStandingZoneFaces true;
+}
+
+
+
+// Settings for the snapping.
+snapControls
+{
+    //- Number of patch smoothing iterations before finding correspondence
+    //  to surface
+    nSmoothPatch 3;
+
+    //- Relative distance for points to be attracted by surface feature point
+    //  or edge. True distance is this factor times local
+    //  maximum edge length.
+    tolerance 1.0;
+
+    //- Number of mesh displacement relaxation iterations.
+    nSolveIter 300;
+
+    //- Maximum number of snapping relaxation iterations. Should stop
+    //  before upon reaching a correct mesh.
+    nRelaxIter 5;
+
+    // Feature snapping
+
+        //- Number of feature edge snapping iterations.
+        //  Leave out altogether to disable.
+        nFeatureSnapIter 10;
+
+        //- Detect (geometric) features by sampling the surface
+        implicitFeatureSnap false;
+
+        //- Use castellatedMeshControls::features
+        explicitFeatureSnap true;
+
+        //- Detect features between multiple surfaces
+        //  (only for explicitFeatureSnap, default = false)
+        multiRegionFeatureSnap true;
+}
+
+
+
+// Settings for the layer addition.
+addLayersControls
+{
+    // Are the thickness parameters below relative to the undistorted
+    // size of the refined cell outside layer (true) or absolute sizes (false).
+    relativeSizes true;
+
+    // Per final patch (so not geometry!) the layer information
+    layers
+    {
+        "flange_.*"
+        {
+            nSurfaceLayers 1;
+        }
+    }
+
+    // Expansion factor for layer mesh
+    expansionRatio 1.0;
+
+
+    // Wanted thickness of final added cell layer. If multiple layers
+    // is the thickness of the layer furthest away from the wall.
+    // Relative to undistorted size of cell outside layer.
+    // See relativeSizes parameter.
+    finalLayerThickness 0.3;
+
+    // Minimum thickness of cell layer. If for any reason layer
+    // cannot be above minThickness do not add layer.
+    // See relativeSizes parameter.
+    minThickness 0.25;
+
+    // If points get not extruded do nGrow layers of connected faces that are
+    // also not grown. This helps convergence of the layer addition process
+    // close to features.
+    nGrow 0;
+
+
+    // Advanced settings
+
+    // When not to extrude surface. 0 is flat surface, 90 is when two faces
+    // are perpendicular
+    featureAngle 30;
+
+    // Maximum number of snapping relaxation iterations. Should stop
+    // before upon reaching a correct mesh.
+    nRelaxIter 5;
+
+    // Number of smoothing iterations of surface normals
+    nSmoothSurfaceNormals 1;
+
+    // Number of smoothing iterations of interior mesh movement direction
+    nSmoothNormals 3;
+
+    // Smooth layer thickness over surface patches
+    nSmoothThickness 10;
+
+    // Stop layer growth on highly warped cells
+    maxFaceThicknessRatio 0.5;
+
+    // Reduce layer growth where ratio thickness to medial
+    // distance is large
+    maxThicknessToMedialRatio 0.3;
+
+    // Angle used to pick up medial axis points
+    minMedialAxisAngle 90;
+
+    // Create buffer region for new layer terminations
+    nBufferCellsNoExtrude 0;
+
+
+    // Overall max number of layer addition iterations. The mesher will exit
+    // if it reaches this number of iterations; possibly with an illegal
+    // mesh.
+    nLayerIter 50;
+
+    // Max number of iterations after which relaxed meshQuality controls
+    // get used. Up to nRelaxIter it uses the settings in meshQualityControls,
+    // after nRelaxIter it uses the values in meshQualityControls::relaxed.
+    nRelaxedIter 20;
+}
+
+
+
+// Generic mesh quality settings. At any undoable phase these determine
+// where to undo.
+meshQualityControls
+{
+    #include "meshQualityDict"
+
+    // Optional : some meshing phases allow usage of relaxed rules.
+    // See e.g. addLayersControls::nRelaxedIter.
+    relaxed
+    {
+        //- Maximum non-orthogonality allowed. Set to 180 to disable.
+        maxNonOrtho 75;
+    }
+
+    // Advanced
+
+    //- Number of error distribution iterations
+    nSmoothScale 4;
+    //- Amount to scale back displacement at error points
+    errorReduction 0.75;
+}
+
+
+// Advanced
+
+// Write flags
+writeFlags
+(
+    scalarLevels    // write volScalarField with cellLevel for postprocessing
+    layerSets       // write cellSets, faceSets of faces in layer
+    layerFields     // write volScalarField for layer coverage
+);
+
+
+// Merge tolerance. Is fraction of overall bounding box of initial mesh.
+// Note: the write tolerance needs to be higher than this.
+mergeTolerance 1E-6;
+
+
+// ************************************************************************* //

applications/test/zoneDistribute/case1/system/surfaceFeatureExtractDict

@@ -0,0 +1,35 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  v1912                                 |
+|   \\  /    A nd           | Website:  www.openfoam.com                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    object      surfaceFeatureExtractDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+flange.stl
+{
+    // How to obtain raw features (extractFromFile || extractFromSurface)
+    extractionMethod    extractFromSurface;
+
+    // Mark edges whose adjacent surface normals are at an angle less
+    // than includedAngle as features
+    // - 0  : selects no edges
+    // - 180: selects all edges
+    includedAngle       150;
+
+    // Write options
+
+    // Write features to obj format for postprocessing
+    writeObj            yes;
+}
+
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/Allwclean

@@ -0,0 +1,7 @@
+#!/bin/sh
+cd "${0%/*}" || exit    # Run from this directory
+
+wclean libso alphaFieldFunctions
+wclean
+
+#------------------------------------------------------------------------------

applications/utilities/preProcessing/setAlphaField/Allwmake

@@ -0,0 +1,10 @@
+#!/bin/sh
+cd "${0%/*}" || exit                                # Run from this directory
+. ${WM_PROJECT_DIR:?}/wmake/scripts/AllwmakeParseArguments
+
+#------------------------------------------------------------------------------
+
+wmake $targetType alphaFieldFunctions
+wmake $targetType
+
+#------------------------------------------------------------------------------

applications/utilities/preProcessing/setAlphaField/Make/options

@@ -1,9 +1,17 @@
 EXE_INC = \
+    -IalphaFieldFunctions/lnInclude \
     -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/surfMesh/lnInclude \
     -I$(LIB_SRC)/meshTools/lnInclude \
-    -I$(LIB_SRC)/sampling/lnInclude
+    -I$(LIB_SRC)/fileFormats/lnInclude \
+    -I$(LIB_SRC)/sampling/lnInclude \
+    -I$(LIB_SRC)/transportModels/geometricVoF/lnInclude
 
 EXE_LIBS = \
     -lfiniteVolume \
+    -lfileFormats \
+    -lsurfMesh \
     -lmeshTools \
-    -lsampling
+    -lsampling \
+    -lgeometricVoF \
+    -lalphaFieldFunctions

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/Make/files

@@ -0,0 +1,11 @@
+/* Run-time selectable implicitFunctions */
+implicitFunctions/implicitFunction.C
+implicitFunctions/sphere/sphereImplicitFunction.C
+implicitFunctions/sin/sinImplicitFunction.C
+implicitFunctions/ellipsoid/ellipsoidImplicitFunction.C
+implicitFunctions/paraboloid/paraboloidImplicitFunction.C
+implicitFunctions/plane/planeImplicitFunction.C
+implicitFunctions/cylinder/cylinderImplicitFunction.C
+implicitFunctions/composedFunction/composedFunctionImplicitFunction.C
+
+LIB = $(FOAM_LIBBIN)/libalphaFieldFunctions

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/Make/options

@@ -0,0 +1,2 @@
+/* EXE_INC = */
+/* LIB_LIBS = */

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/composedFunction/composedFunctionImplicitFunction.C

@@ -0,0 +1,207 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "composedFunctionImplicitFunction.H"
+#include "scalarField.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    namespace implicitFunctions
+    {
+        defineTypeNameAndDebug(composedFunctionImplicitFunction, 0);
+        addToRunTimeSelectionTable
+        (
+            implicitFunction,
+            composedFunctionImplicitFunction,
+            dict
+        );
+    }
+}
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+const Foam::Enum
+<
+    Foam::implicitFunctions::composedFunctionImplicitFunction::modeType
+>
+Foam::implicitFunctions::composedFunctionImplicitFunction::modeTypeNames
+({
+    { modeType::ADD, "add" },
+    { modeType::SUBTRACT, "subtract" },
+    { modeType::MINDIST, "minDist" },
+    { modeType::INTERSECT, "intersect" },
+});
+
+
+Foam::label
+Foam::implicitFunctions::composedFunctionImplicitFunction::selectFunction
+(
+    const scalarField& values
+) const
+{
+    switch (mode_)
+    {
+        case modeType::MINDIST:
+        {
+            scalarField absVal(mag(values));
+            return findMin(absVal);
+        }
+        case modeType::ADD:
+        {
+            return findMax(values);
+        }
+        case modeType::SUBTRACT:
+        {
+            // Note: start at the second entry
+            const label idx = findMin(values, 1);
+
+            if (values[idx] < values[0] && pos(values[0]))
+            {
+                return idx;
+            }
+            else
+            {
+                return 0;
+            }
+        }
+        case modeType::INTERSECT:
+        {
+            return findMin(values);
+        }
+        default:
+        {
+            FatalErrorInFunction
+                << "This mode is not supported  only " << nl
+                << "Supported modes are: " << nl
+                << modeTypeNames
+                << abort(FatalError);
+        }
+    }
+
+    return -1;
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::implicitFunctions::composedFunctionImplicitFunction::
+composedFunctionImplicitFunction
+(
+    const dictionary& dict
+)
+:
+    functions_(),
+    mode_(modeTypeNames.get("mode", dict)),
+    values_()
+{
+    const dictionary& funcDict = dict.subDict("composedFunction");
+
+    functions_.resize(funcDict.size());
+    values_.resize(funcDict.size(), Zero);
+
+    label funci = 0;
+
+    for (const entry& dEntry : funcDict)
+    {
+        const word& key = dEntry.keyword();
+
+        if (!dEntry.isDict())
+        {
+            FatalIOErrorInFunction(funcDict)
+                << "Entry " << key << " is not a dictionary" << endl
+                << exit(FatalError);
+        }
+
+        const dictionary& subdict = dEntry.dict();
+
+        functions_.set
+        (
+            funci,
+            implicitFunction::New(subdict.get<word>("type"), subdict)
+        );
+
+        ++funci;
+    }
+}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+Foam::scalar Foam::implicitFunctions::composedFunctionImplicitFunction::value
+(
+    const vector& p
+) const
+{
+    forAll(values_,i)
+    {
+        values_[i] = functions_[i].value(p);
+    }
+
+    const label idx = selectFunction(values_);
+
+    return values_[idx];
+}
+
+
+Foam::vector Foam::implicitFunctions::composedFunctionImplicitFunction::grad
+(
+    const vector& p
+) const
+{
+    forAll(values_,i)
+    {
+        values_[i] = mag(functions_[i].value(p));
+    }
+
+    const label minIdx = findMin(values_);
+
+    return functions_[minIdx].grad(p);
+}
+
+
+Foam::scalar
+Foam::implicitFunctions::composedFunctionImplicitFunction::distanceToSurfaces
+(
+    const vector& p
+) const
+{
+    forAll(values_,i)
+    {
+        values_[i] = mag(functions_[i].value(p));
+    }
+
+    const label minIdx = findMin(values_);
+
+    return functions_[minIdx].distanceToSurfaces(p);
+}
+
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/composedFunction/composedFunctionImplicitFunction.H

@@ -0,0 +1,169 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::implicitFunctions::composedFunctionImplicitFunction
+
+Description
+    Handles multiple implicit functions and offers multiple ways to combine
+    them
+
+Usage
+    Example of function object partial specification:
+    \verbatim
+    function composedFunctionImplicitFunction;
+    mode minDist;
+    // following mode are available:
+    // "add" "subtract" "minDist" "intersect"
+    composedFunctionImplicitFunctions
+    {
+        plane
+        {
+            function plane;
+            origin (0 1. 0);
+            normal (0 1 0);
+        }
+
+        sphere
+        {
+            function sphere;
+            radius 0.4;
+            origin (0.5 1.5 0.5);
+            scale 1;
+        }
+
+        sphere2
+        {
+            function sphere;
+            radius 0.4;
+            origin (0.5 0.5 0.5);
+            scale -1;
+        }
+    }
+    \endverbatim
+
+    Original code supplied by Henning Scheufler, DLR (2019)
+
+SourceFiles
+    composedFunctionImplicitFunction.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef implicitFunctions_composedFunctionImplicitFunction_H
+#define implicitFunctions_composedFunctionImplicitFunction_H
+
+#include "implicitFunction.H"
+#include "scalarField.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace implicitFunctions
+{
+
+/*---------------------------------------------------------------------------*\
+              Class composedFunctionImplicitFunction Declaration
+\*---------------------------------------------------------------------------*/
+
+class composedFunctionImplicitFunction
+:
+    public implicitFunction
+{
+    // Private Member Data
+
+        //- Enumeration defining the valid actions
+        enum class modeType
+        {
+            ADD,
+            SUBTRACT,
+            MINDIST,
+            INTERSECT
+        };
+
+        //- The setActions text representations
+        static const Enum<modeType> modeTypeNames;
+
+        //- Stores the functions
+        PtrList<implicitFunction> functions_;
+
+        //- Mode
+        modeType mode_;
+
+        //- Needed for finding the closest function.
+        //  Note: avoid creation every call
+        mutable scalarField values_;
+
+
+    // Private Member Functions
+
+        label selectFunction(const scalarField& values) const;
+
+        //- No copy construct
+        composedFunctionImplicitFunction
+        (
+            const composedFunctionImplicitFunction&
+        ) = delete;
+
+        //- No copy assignment
+        void operator=(const composedFunctionImplicitFunction&) = delete;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("composedFunction");
+
+
+    // Constructors
+
+        //- Construct from dictionary
+        explicit composedFunctionImplicitFunction(const dictionary& dict);
+
+
+    //- Destructor
+    virtual ~composedFunctionImplicitFunction() = default;
+
+
+    // Member Functions
+
+        virtual scalar value(const vector& p) const;
+
+        virtual vector grad(const vector& p) const;
+
+        virtual scalar distanceToSurfaces(const vector& p) const;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+} // End namespace implicitFunctions
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/cylinder/cylinderImplicitFunction.C

@@ -0,0 +1,82 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "cylinderImplicitFunction.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    namespace implicitFunctions
+    {
+        defineTypeNameAndDebug(cylinderImplicitFunction, 0);
+        addToRunTimeSelectionTable
+        (
+            implicitFunction,
+            cylinderImplicitFunction,
+            dict
+        );
+    }
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::implicitFunctions::cylinderImplicitFunction::cylinderImplicitFunction
+(
+    const point& origin,
+    const scalar radius,
+    const scalar scale,
+    const vector& direction
+)
+:
+    origin_(origin),
+    radius_(radius),
+    scale_(scale),
+    direction_(normalised(direction)),
+    project_(tensor::I - direction_*direction_) // outer product
+{}
+
+
+Foam::implicitFunctions::cylinderImplicitFunction::cylinderImplicitFunction
+(
+    const dictionary& dict
+)
+:
+    cylinderImplicitFunction
+    (
+        dict.get<point>("origin"),
+        dict.get<scalar>("radius"),
+        dict.getOrDefault<scalar>("scale", 1),
+        dict.get<vector>("direction")
+    )
+{}
+
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/cylinder/cylinderImplicitFunction.H

@@ -0,0 +1,132 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::implicitFunctions::cylinderImplicitFunction
+
+Description
+    creates a infintite long cylinderImplicitFunction
+
+    Original code supplied by Henning Scheufler, DLR (2019)
+
+SourceFiles
+    cylinderImplicitFunction.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef implicitFunction_cylinderImplicitFunction_H
+#define implicitFunction_cylinderImplicitFunction_H
+
+#include "implicitFunction.H"
+#include "point.H"
+#include "tensor.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace implicitFunctions
+{
+
+/*---------------------------------------------------------------------------*\
+                   Class cylinderImplicitFunction Declaration
+\*---------------------------------------------------------------------------*/
+
+class cylinderImplicitFunction
+:
+    public implicitFunction
+{
+private:
+
+    // Private Data
+
+        //- Origin point
+        const point origin_;
+
+        //- Radius
+        const scalar radius_;
+
+        const scalar scale_;
+
+        const vector direction_;
+
+        const tensor project_;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("cylinder");
+
+
+    // Constructors
+
+        //- Construct from components
+        cylinderImplicitFunction
+        (
+            const point& origin,
+            const scalar radius,
+            const scalar scale,
+            const vector& direction
+        );
+
+        //- Construct from dictionary
+        explicit cylinderImplicitFunction(const dictionary& dict);
+
+
+    //- Destructor
+    virtual ~cylinderImplicitFunction() = default;
+
+
+    // Member Functions
+
+    virtual scalar value(const vector& p) const
+    {
+        return (-mag(project_ & (p - origin_)) + radius_)*scale_;
+    }
+
+    virtual vector grad(const vector& p) const
+    {
+        return -(project_ & (p - origin_))*scale_;
+    }
+
+    virtual scalar distanceToSurfaces(const vector& p) const
+    {
+        return mag(mag(project_ & (p - origin_)) - radius_)*scale_;
+    }
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace implicitFunctions
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/ellipsoid/ellipsoidImplicitFunction.C

@@ -0,0 +1,73 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "ellipsoidImplicitFunction.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    namespace implicitFunctions
+    {
+        defineTypeNameAndDebug(ellipsoidImplicitFunction, 0);
+        addToRunTimeSelectionTable
+        (
+            implicitFunction,
+            ellipsoidImplicitFunction,
+            dict
+        );
+    }
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::implicitFunctions::ellipsoidImplicitFunction::ellipsoidImplicitFunction
+(
+    const vector& semiAxis
+)
+:
+    semiAxis_(semiAxis),
+    origin_(Zero)
+{}
+
+
+Foam::implicitFunctions::ellipsoidImplicitFunction::ellipsoidImplicitFunction
+(
+    const dictionary& dict
+)
+:
+    ellipsoidImplicitFunction
+    (
+        dict.get<vector>("semiAxis")
+    )
+{}
+
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/ellipsoid/ellipsoidImplicitFunction.H

@@ -0,0 +1,131 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::implicitFunctions::ellipsoidImplicitFunction
+
+Description
+    creates an ellipsoidImplicitFunction
+
+    Original code supplied by Henning Scheufler, DLR (2019)
+
+SourceFiles
+    ellipsoidImplicitFunction.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef implicitFunction_ellipsoidImplicitFunction_H
+#define implicitFunction_ellipsoidImplicitFunction_H
+
+#include "implicitFunction.H"
+#include "mathematicalConstants.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace implicitFunctions
+{
+
+/*---------------------------------------------------------------------------*\
+                  Class ellipsoidImplicitFunction Declaration
+\*---------------------------------------------------------------------------*/
+
+class ellipsoidImplicitFunction
+:
+    public implicitFunction
+{
+    // Private Member Data
+
+        //- Axis
+        const vector semiAxis_;
+
+        //- Origin point
+        const vector origin_;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("ellipsoidImplicitFunction");
+
+
+    // Constructors
+
+        //- Construct from components
+        explicit ellipsoidImplicitFunction(const vector& semiAxis);
+
+        //- Construct from dictionary
+        explicit ellipsoidImplicitFunction(const dictionary& dict);
+
+
+    //- Destructor
+    virtual ~ellipsoidImplicitFunction() = default;
+
+
+    // Member Functions
+
+    virtual scalar value(const vector& p) const
+    {
+        return
+           -sqrt
+            (
+                sqr((p.x() - origin_.x())/semiAxis_.x())
+              + sqr((p.y() - origin_.y())/semiAxis_.y())
+              + sqr((p.z() - origin_.z())/semiAxis_.z())
+            ) + 1;
+    }
+
+
+    virtual vector grad(const vector& p) const
+    {
+        // normal_ has the length of one
+        return vector
+        (
+            2*(p.x() - origin_.x())/sqr(semiAxis_.x()),
+            2*(p.y() - origin_.y())/sqr(semiAxis_.y()),
+            2*(p.z() - origin_.z())/sqr(semiAxis_.z())
+        );
+    }
+
+    virtual scalar distanceToSurfaces(const vector& p) const
+    {
+        NotImplemented;
+        return GREAT;
+    }
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace implicitFunctions
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/implicitFunction.C

@@ -0,0 +1,66 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "implicitFunction.H"
+#include "error.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    defineTypeNameAndDebug(implicitFunction, 0);
+    defineRunTimeSelectionTable(implicitFunction, dict);
+}
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+Foam::autoPtr<Foam::implicitFunction> Foam::implicitFunction::New
+(
+    const word& implicitFunctionType,
+    const dictionary& dict
+)
+{
+    auto cstrIter = dictConstructorTablePtr_->cfind(implicitFunctionType);
+
+    if (!cstrIter.found())
+    {
+        FatalIOErrorInLookup
+        (
+            dict,
+            "implicitFunction",
+            implicitFunctionType,
+            *dictConstructorTablePtr_
+        ) << exit(FatalIOError);
+    }
+
+    return autoPtr<implicitFunction>(cstrIter()(dict));
+}
+
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/implicitFunction.H

@@ -0,0 +1,122 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::implicitFunction
+
+Description
+    Base class for implicit functions
+
+    Original code supplied by Henning Scheufler, DLR (2019)
+
+SourceFiles
+    implicitFunction.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef implicitFunction_H
+#define implicitFunction_H
+
+#include "autoPtr.H"
+#include "dictionary.H"
+#include "vector.H"
+#include "runTimeSelectionTables.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+/*---------------------------------------------------------------------------*\
+                      Class implicitFunction Declaration
+\*---------------------------------------------------------------------------*/
+
+class implicitFunction
+{
+public:
+
+    //- Runtime type information
+    TypeName("implicitFunction");
+
+    //- Declare run-time constructor selection table
+    declareRunTimeSelectionTable
+    (
+        autoPtr,
+        implicitFunction,
+        dict,
+        (
+            const dictionary& dict
+        ),
+        (dict)
+    );
+
+
+    // Constructors
+
+        //- Default construct
+        implicitFunction() = default;
+
+
+        //- Return a reference to the selected implicitFunction
+        static autoPtr<implicitFunction> New
+        (
+            const word& implicitFunctionType,
+            const dictionary& dict
+        );
+
+
+    //- Destructor
+    virtual ~implicitFunction() = default;
+
+
+    // Member Functions
+
+        virtual scalar value(const vector& p) const
+        {
+            return GREAT;
+        }
+
+        virtual vector grad(const vector& p) const
+        {
+            return vector::max;
+        }
+
+        virtual scalar distanceToSurfaces(const vector& p) const
+        {
+            return GREAT;
+        }
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/paraboloid/paraboloidImplicitFunction.C

@@ -5,7 +5,8 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2011-2017 OpenFOAM Foundation
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019 DLR
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -23,33 +24,50 @@ License
     You should have received a copy of the GNU General Public License
     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
-Global
-    setDeltaT
-
-Description
-    Reset the timestep to maintain a constant maximum courant Number.
-    Reduction of time-step is immediate, but increase is damped to avoid
-    unstable oscillations.
-
 \*---------------------------------------------------------------------------*/
 
-if (adjustTimeStep)
+#include "paraboloidImplicitFunction.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
 {
-    scalar maxDeltaTFact =
-        min(maxCo/(CoNum + SMALL), maxAlphaCo/(alphaCoNum + SMALL));
-
-    scalar deltaTFact = min(min(maxDeltaTFact, 1.0 + 0.1*maxDeltaTFact), 1.2);
-
-    runTime.setDeltaT
-    (
-        min
+    namespace implicitFunctions
+    {
+        defineTypeNameAndDebug(paraboloidImplicitFunction, 0);
+        addToRunTimeSelectionTable
         (
-            deltaTFact*runTime.deltaTValue(),
-            maxDeltaT
-        )
-    );
+            implicitFunction,
+            paraboloidImplicitFunction,
+            dict
+        );
+    }
 
-    Info<< "deltaT = " <<  runTime.deltaTValue() << endl;
 }
 
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::implicitFunctions::paraboloidImplicitFunction::paraboloidImplicitFunction
+(
+    const vector& coeffs
+)
+:
+    coeffs_(coeffs)
+{}
+
+
+Foam::implicitFunctions::paraboloidImplicitFunction::paraboloidImplicitFunction
+(
+    const dictionary& dict
+)
+:
+    paraboloidImplicitFunction
+    (
+        dict.get<vector>("coeffs")
+    )
+{}
+
+
 // ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/paraboloid/paraboloidImplicitFunction.H

@@ -0,0 +1,120 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::implicitFunctions::paraboloidImplicitFunction
+
+Description
+    creates a paraboloid
+
+    Original code supplied by Henning Scheufler, DLR (2019)
+
+SourceFiles
+    paraboloidImplicitFunction.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef implicitFunction_paraboloidImplicitFunction_H
+#define implicitFunction_paraboloidImplicitFunction_H
+
+#include "implicitFunction.H"
+#include "mathematicalConstants.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace implicitFunctions
+{
+
+/*---------------------------------------------------------------------------*\
+                 Class paraboloidImplicitFunction Declaration
+\*---------------------------------------------------------------------------*/
+
+class paraboloidImplicitFunction
+:
+    public implicitFunction
+{
+    // Private Data
+
+        //- Coefficients of ax^2 + bx*y + cy^2
+        const vector coeffs_;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("paraboloid");
+
+
+    // Constructors
+
+        //- Construct from components
+        explicit paraboloidImplicitFunction(const vector& coeffs);
+
+        //- Construct from dictionary
+        explicit paraboloidImplicitFunction(const dictionary& dict);
+
+
+    //- Destructor
+    virtual ~paraboloidImplicitFunction() = default;
+
+
+    // Member Functions
+
+        virtual scalar value(const vector& p) const
+        {
+            return
+                coeffs_.x()*sqr(p.x())
+              + coeffs_.y()*p.x()*p.y()
+              + coeffs_.z()*sqr(p.y())
+              - p.z();
+        }
+
+        virtual vector grad(const vector& p) const
+        {
+            NotImplemented;
+            return Zero;
+        }
+
+        virtual scalar distanceToSurfaces(const vector& p) const
+        {
+            NotImplemented;
+            return 0;
+        }
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace implicitFunctions
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/plane/planeImplicitFunction.C

@@ -0,0 +1,75 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "planeImplicitFunction.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    namespace implicitFunctions
+    {
+        defineTypeNameAndDebug(planeImplicitFunction, 0);
+        addToRunTimeSelectionTable
+        (
+            implicitFunction,
+            planeImplicitFunction,
+            dict
+        );
+    }
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::implicitFunctions::planeImplicitFunction::planeImplicitFunction
+(
+    const vector& origin,
+    const vector& normal
+)
+:
+    origin_(origin),
+    normal_(normalised(normal))
+{}
+
+
+Foam::implicitFunctions::planeImplicitFunction::planeImplicitFunction
+(
+    const dictionary& dict
+)
+:
+    planeImplicitFunction
+    (
+        dict.get<vector>("origin"),
+        dict.get<vector>("normal")
+    )
+{}
+
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/plane/planeImplicitFunction.H

@@ -0,0 +1,120 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::implicitFunctions::planeImplicitFunction
+
+Description
+    creates a plane
+
+    Original code supplied by Henning Scheufler, DLR (2019)
+
+SourceFiles
+    planeImplicitFunction.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef implicitFunction_planeImplicitFunction_H
+#define implicitFunction_planeImplicitFunction_H
+
+#include "implicitFunction.H"
+#include "mathematicalConstants.H"
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace implicitFunctions
+{
+
+/*---------------------------------------------------------------------------*\
+                    Class planeImplicitFunction Declaration
+\*---------------------------------------------------------------------------*/
+
+class planeImplicitFunction
+:
+    public implicitFunction
+{
+    // Private Data
+
+        //- Reference point
+        const vector origin_;
+
+        //- Unit-normal vector
+        const vector normal_;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("plane");
+
+
+    // Constructors
+
+        //- Construct from components
+        planeImplicitFunction(const vector& origin, const vector& normal);
+
+        //- Construct from dictionary (used by implicitFunctions)
+        explicit planeImplicitFunction(const dictionary& dict);
+
+
+    //- Destructor
+    virtual ~planeImplicitFunction() = default;
+
+
+    // Member Functions
+
+        virtual scalar value(const vector& p) const
+        {
+            return -normal_ & (origin_ - p);
+        }
+
+        virtual vector grad(const vector& p) const
+        {
+            // normal_ has the length of one
+            return normal_;
+        }
+
+        virtual scalar distanceToSurfaces(const vector& p) const
+        {
+            // normal_ has the length of one
+            return mag((p - origin_) & -normal_);
+        }
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace implicitFunctions
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/sin/sinImplicitFunction.C

@@ -0,0 +1,87 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "sinImplicitFunction.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    namespace implicitFunctions
+    {
+        defineTypeNameAndDebug(sinImplicitFunction, 0);
+        addToRunTimeSelectionTable
+        (
+            implicitFunction,
+            sinImplicitFunction,
+            dict
+        );
+    }
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::implicitFunctions::sinImplicitFunction::sinImplicitFunction
+(
+    const scalar period,
+    const scalar phase,
+    const scalar amplitude,
+    const vector& direction,
+    const vector& up,
+    const vector& origin
+)
+:
+    period_(period),
+    phase_(phase),
+    amplitude_(amplitude),
+    up_(normalised(up)),
+    direction_(normalised(direction)),
+    origin_(origin)
+{}
+
+
+Foam::implicitFunctions::sinImplicitFunction::sinImplicitFunction
+(
+    const dictionary& dict
+)
+:
+    sinImplicitFunction
+    (
+        dict.get<scalar>("period"),
+        dict.getOrDefault<scalar>("phase", 0),
+        dict.get<scalar>("amplitude"),
+        dict.get<vector>("direction"),
+        dict.get<vector>("up"),
+        dict.get<vector>("origin")
+    )
+{}
+
+
+// ************************************************************************* //

applications/utilities/preProcessing/setAlphaField/alphaFieldFunctions/implicitFunctions/sin/sinImplicitFunction.H

@@ -0,0 +1,142 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2019 OpenCFD Ltd.
+    Copyright (C) 2019-2020 DLR
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::implicitFunctions::sinImplicitFunction
+
+Description
+
+    Original code supplied by Henning Scheufler, DLR (2019)
+
+SourceFiles
+    sinImplicitFunction.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef implicitFunction_sinImplicitFunction_H
+#define implicitFunction_sinImplicitFunction_H
+
+#include "implicitFunction.H"
+#include "mathematicalConstants.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace implicitFunctions
+{
+
+/*---------------------------------------------------------------------------*\
+                     Class sinImplicitFunction Declaration
+\*---------------------------------------------------------------------------*/
+
+class sinImplicitFunction
+:
+    public implicitFunction
+{
+private:
+
+    // Private Data
+
+        //- Origin point
+        const scalar period_;
+
+        //- Radius
+        const scalar phase_;
+
+        const scalar amplitude_;
+
+        const vector up_;
+
+        const vector direction_;
+
+        const vector origin_;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("sin");
+
+
+    // Constructors
+
+        //- Construct from components
+        sinImplicitFunction
+        (
+            const scalar period,
+            const scalar phase,
+            const scalar amplitude,
+            const vector& direction,
+            const vector& up,
+            const vector& origin
+        );
+
+        //- Construct from dictionary (used by implicitFunctions)
+        explicit sinImplicitFunction(const dictionary& dict);
+
+
+    //- Destructor
+    virtual ~sinImplicitFunction() = default;
+
+
+    // Member Functions
+
+        virtual scalar value(const vector& p) const
+        {
+            const scalar x = (p - origin_) & direction_;
+            const scalar z = (p - origin_) & -up_;
+
+            return
+                z
+              - amplitude_
+               *Foam::sin(2*constant::mathematical::pi*x/period_ + phase_);
+        }
+
+        virtual vector grad(const vector& p) const
+        {
+            NotImplemented;
+            return Zero;
+        }
+
+        virtual scalar distanceToSurfaces(const vector& p) const
+        {
+            NotImplemented;
+            return 0;
+        }
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace implicitFunctions
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //