ENH: pimpleDyMFoam: Improved efficiency and consistency when running on a static mesh

Now pimpleDyMFoam is exactly equivalent to pimpleFoam when running on a
staticFvMesh.  Also when the constant/dynamicMeshDict is not present a
staticFvMesh is automatically constructed so that the pimpleDyMFoam solver can
run any pimpleFoam case without change.

pimpleDyMFoam: Store Uf as an autoPtr for better error handling

pimpleFoam: Set initial deltaT from the Courant number

for improved stability on start-up and compatibility with pimpleDyMFoam

ENH: pimpleFoam: Merged dynamic mesh functionality of pimpleDyMFoam into pimpleFoam

and replaced pimpleDyMFoam with a script which reports this change.

The pimpleDyMFoam tutorials have been moved into the pimpleFoam directory.

This change is the first of a set of developments to merge dynamic mesh
functionality into the standard solvers to improve consistency, usability,
flexibility and maintainability of these solvers.

Henry G. Weller
CFD Direct Ltd.

tutorials/incompressible/pimpleFoam: Updated pimpleDyMFoam tutorials to run pimpleFoam

Renamed tutorials/incompressible/pimpleFoam/RAS/wingMotion/wingMotion2D_pimpleDyMFoam

-> tutorials/incompressible/pimpleFoam/RAS/wingMotion/wingMotion2D_pimpleFoam

applications/solvers/incompressible/pimpleFoam/Make/options

@@ -4,14 +4,19 @@ EXE_INC = \
     -I$(LIB_SRC)/transportModels \
     -I$(LIB_SRC)/transportModels/incompressible/singlePhaseTransportModel \
     -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/sampling/lnInclude \
+    -I$(LIB_SRC)/dynamicFvMesh/lnInclude \
+    -I$(LIB_SRC)/dynamicMesh/lnInclude \
     -I$(LIB_SRC)/meshTools/lnInclude \
-    -I$(LIB_SRC)/sampling/lnInclude
 
 EXE_LIBS = \
     -lturbulenceModels \
     -lincompressibleTurbulenceModels \
     -lincompressibleTransportModels \
     -lfiniteVolume \
-    -lmeshTools \
     -lfvOptions \
-    -lsampling
+    -lsampling \
+    -ldynamicFvMesh \
+    -ltopoChangerFvMesh \
+    -ldynamicMesh \
+    -lmeshTools

applications/solvers/incompressible/pimpleFoam/pEqn.H

@@ -4,12 +4,17 @@ surfaceScalarField phiHbyA
 (
     "phiHbyA",
     fvc::flux(HbyA)
-  + fvc::interpolate(rAU)*fvc::ddtCorr(U, phi)
+  + fvc::interpolate(rAU)*fvc::ddtCorr(U, phi, Uf)
 );
 
 MRF.makeRelative(phiHbyA);
 
+if (p.needReference())
+{
+    fvc::makeRelative(phiHbyA, U);
     adjustPhi(phiHbyA, U, p);
+    fvc::makeAbsolute(phiHbyA, U);
+}
 
 tmp<volScalarField> rAtU(rAU);
 
@@ -32,7 +37,6 @@ constrainPressure(p, U, phiHbyA, rAtU(), MRF);
 // Non-orthogonal pressure corrector loop
 while (pimple.correctNonOrthogonal())
 {
-    // Pressure corrector
     fvScalarMatrix pEqn
     (
         fvm::laplacian(rAtU(), p) == fvc::div(phiHbyA)
@@ -53,6 +57,12 @@ while (pimple.correctNonOrthogonal())
 // Explicitly relax pressure for momentum corrector
 p.relax();
 
-U = HbyA - rAtU()*fvc::grad(p);
+U = HbyA - rAtU*fvc::grad(p);
 U.correctBoundaryConditions();
 fvOptions.correct(U);
+
+// Correct Uf if the mesh is moving
+fvc::correctUf(Uf, U, phi);
+
+// Make the fluxes relative to the mesh motion
+fvc::makeRelative(phi, U);

applications/solvers/incompressible/pimpleFoam/pimpleDyMFoam/Make/files

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

applications/solvers/incompressible/pimpleFoam/pimpleDyMFoam/Make/options

@@ -1,24 +0,0 @@
-EXE_INC = \
-    -I. \
-    -I.. \
-    -I$(LIB_SRC)/TurbulenceModels/turbulenceModels/lnInclude \
-    -I$(LIB_SRC)/TurbulenceModels/incompressible/lnInclude \
-    -I$(LIB_SRC)/transportModels \
-    -I$(LIB_SRC)/transportModels/incompressible/singlePhaseTransportModel \
-    -I$(LIB_SRC)/finiteVolume/lnInclude \
-    -I$(LIB_SRC)/sampling/lnInclude \
-    -I$(LIB_SRC)/dynamicFvMesh/lnInclude \
-    -I$(LIB_SRC)/dynamicMesh/lnInclude \
-    -I$(LIB_SRC)/meshTools/lnInclude \
-
-EXE_LIBS = \
-    -lturbulenceModels \
-    -lincompressibleTurbulenceModels \
-    -lincompressibleTransportModels \
-    -lfiniteVolume \
-    -lfvOptions \
-    -lsampling \
-    -ldynamicFvMesh \
-    -ltopoChangerFvMesh \
-    -ldynamicMesh \
-    -lmeshTools

applications/solvers/incompressible/pimpleFoam/pimpleDyMFoam/pEqn.H

@@ -1,71 +0,0 @@
-volScalarField rAU(1.0/UEqn.A());
-volVectorField HbyA(constrainHbyA(rAU*UEqn.H(), U, p));
-surfaceScalarField phiHbyA
-(
-    "phiHbyA",
-    fvc::flux(HbyA)
-  + fvc::interpolate(rAU)*fvc::ddtCorr(U, Uf)
-);
-
-MRF.makeRelative(phiHbyA);
-
-if (p.needReference())
-{
-    fvc::makeRelative(phiHbyA, U);
-    adjustPhi(phiHbyA, U, p);
-    fvc::makeAbsolute(phiHbyA, U);
-}
-
-tmp<volScalarField> rAtU(rAU);
-
-if (pimple.consistent())
-{
-    rAtU = 1.0/max(1.0/rAU - UEqn.H1(), 0.1/rAU);
-    phiHbyA +=
-        fvc::interpolate(rAtU() - rAU)*fvc::snGrad(p)*mesh.magSf();
-    HbyA -= (rAU - rAtU())*fvc::grad(p);
-}
-
-if (pimple.nCorrPISO() <= 1)
-{
-    tUEqn.clear();
-}
-
-// Update the pressure BCs to ensure flux consistency
-constrainPressure(p, U, phiHbyA, rAtU(), MRF);
-
-// Non-orthogonal pressure corrector loop
-while (pimple.correctNonOrthogonal())
-{
-    fvScalarMatrix pEqn
-    (
-        fvm::laplacian(rAtU(), p) == fvc::div(phiHbyA)
-    );
-
-    pEqn.setReference(pRefCell, pRefValue);
-
-    pEqn.solve(mesh.solver(p.select(pimple.finalInnerIter())));
-
-    if (pimple.finalNonOrthogonalIter())
-    {
-        phi = phiHbyA - pEqn.flux();
-    }
-}
-
-#include "continuityErrs.H"
-
-// Explicitly relax pressure for momentum corrector
-p.relax();
-
-U = HbyA - rAtU*fvc::grad(p);
-U.correctBoundaryConditions();
-fvOptions.correct(U);
-
-{
-    Uf = fvc::interpolate(U);
-    surfaceVectorField n(mesh.Sf()/mesh.magSf());
-    Uf += n*(phi/mesh.magSf() - (n & Uf));
-}
-
-// Make the fluxes relative to the mesh motion
-fvc::makeRelative(phi, U);

applications/solvers/incompressible/pimpleFoam/pimpleDyMFoam/pimpleDyMFoam.C

@@ -1,130 +0,0 @@
-/*---------------------------------------------------------------------------*\
-  =========                 |
-  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
-   \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
-     \\/     M anipulation  |
--------------------------------------------------------------------------------
-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
-    pimpleDyMFoam.C
-
-Group
-    grpIncompressibleSolvers grpMovingMeshSolvers
-
-Description
-    Transient solver for incompressible, turbulent flow of Newtonian fluids
-    on a moving mesh.
-
-    Turbulence modelling is generic, i.e. laminar, RAS or LES may be selected.
-
-\*---------------------------------------------------------------------------*/
-
-#include "fvCFD.H"
-#include "dynamicFvMesh.H"
-#include "singlePhaseTransportModel.H"
-#include "turbulentTransportModel.H"
-#include "pimpleControl.H"
-#include "CorrectPhi.H"
-#include "fvOptions.H"
-
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-
-int main(int argc, char *argv[])
-{
-    #include "postProcess.H"
-
-    #include "setRootCase.H"
-    #include "createTime.H"
-    #include "createDynamicFvMesh.H"
-    #include "initContinuityErrs.H"
-    #include "createControls.H"
-    #include "createFields.H"
-    #include "createUf.H"
-    #include "CourantNo.H"
-    #include "setInitialDeltaT.H"
-
-    turbulence->validate();
-
-    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
-
-    Info<< "\nStarting time loop\n" << endl;
-
-    while (runTime.run())
-    {
-        #include "readControls.H"
-        #include "CourantNo.H"
-        #include "setDeltaT.H"
-
-        runTime++;
-
-        Info<< "Time = " << runTime.timeName() << nl << endl;
-
-        mesh.update();
-
-        if (mesh.changing())
-        {
-            MRF.update();
-
-            if (correctPhi)
-            {
-                // Calculate absolute flux from the mapped surface velocity
-                phi = mesh.Sf() & Uf;
-
-                #include "correctPhi.H"
-
-                // Make the flux relative to the mesh motion
-                fvc::makeRelative(phi, U);
-            }
-
-            if (checkMeshCourantNo)
-            {
-                #include "meshCourantNo.H"
-            }
-        }
-
-        // --- Pressure-velocity PIMPLE corrector loop
-        while (pimple.loop())
-        {
-            #include "UEqn.H"
-
-            // --- Pressure corrector loop
-            while (pimple.correct())
-            {
-                #include "pEqn.H"
-            }
-
-            if (pimple.turbCorr())
-            {
-                laminarTransport.correct();
-                turbulence->correct();
-            }
-        }
-
-        runTime.write();
-
-        runTime.printExecutionTime(Info);
-    }
-
-    Info<< "End\n" << endl;
-
-    return 0;
-}
-
-
-// ************************************************************************* //

applications/solvers/incompressible/pimpleFoam/pimpleFoam.C

@@ -22,14 +22,14 @@ License
     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
 Application
-    pimpleFoam
+    pimpleDyMFoam.C
 
 Group
     grpIncompressibleSolvers
 
 Description
-    Large time-step transient solver for incompressible, turbulent flow, using
+    Transient solver for incompressible, turbulent flow of Newtonian fluids
-    the PIMPLE (merged PISO-SIMPLE) algorithm.
+    on a moving mesh.
 
     \heading Solver details
     The solver uses the PIMPLE (merged PISO-SIMPLE) algorithm to solve the
@@ -68,9 +68,11 @@ Description
 \*---------------------------------------------------------------------------*/
 
 #include "fvCFD.H"
+#include "dynamicFvMesh.H"
 #include "singlePhaseTransportModel.H"
 #include "turbulentTransportModel.H"
 #include "pimpleControl.H"
+#include "CorrectPhi.H"
 #include "fvOptions.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
@@ -81,11 +83,13 @@ int main(int argc, char *argv[])
 
     #include "setRootCase.H"
     #include "createTime.H"
-    #include "createMesh.H"
+    #include "createDynamicFvMesh.H"
-    #include "createControl.H"
-    #include "createTimeControls.H"
-    #include "createFields.H"
     #include "initContinuityErrs.H"
+    #include "createControls.H"
+    #include "createFields.H"
+    #include "createUfIfPresent.H"
+    #include "CourantNo.H"
+    #include "setInitialDeltaT.H"
 
     turbulence->validate();
 
@@ -95,7 +99,7 @@ int main(int argc, char *argv[])
 
     while (runTime.run())
     {
-        #include "readTimeControls.H"
+        #include "readControls.H"
         #include "CourantNo.H"
         #include "setDeltaT.H"
 
@@ -103,6 +107,31 @@ int main(int argc, char *argv[])
 
         Info<< "Time = " << runTime.timeName() << nl << endl;
 
+        mesh.update();
+
+        #include "updateUf.H"
+
+        if (mesh.changing())
+        {
+            MRF.update();
+
+            if (correctPhi)
+            {
+                // Calculate absolute flux from the mapped surface velocity
+                phi = mesh.Sf() & Uf();
+
+                #include "correctPhi.H"
+
+                // Make the flux relative to the mesh motion
+                fvc::makeRelative(phi, U);
+            }
+
+            if (checkMeshCourantNo)
+            {
+                #include "meshCourantNo.H"
+            }
+        }
+
         // --- Pressure-velocity PIMPLE corrector loop
         while (pimple.loop())
         {

bin/mergedDyM

@@ -0,0 +1,38 @@
+#!/bin/sh
+#------------------------------------------------------------------------------
+# =========                 |
+# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+#  \\    /   O peration     |
+#   \\  /    A nd           | Copyright (C) 2017 OpenFOAM Foundation
+#    \\/     M anipulation  |
+#-------------------------------------------------------------------------------
+# 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/>.
+#
+# Script
+#     supersededByPostProcess
+#
+# Description
+#     Script to suggest using the new "postProcess" utility.
+#
+#------------------------------------------------------------------------------
+DyMsolver=${0##*/}
+solver=$(echo $DyMsolver | sed 's/DyM//')
+
+echo "The dynamic mesh functionality in $DyMsolver has been merged into $solver"
+echo "and the $DyMsolver tutorials moved into the $solver tutorials directory"
+
+#------------------------------------------------------------------------------

bin/pimpleDyMFoam

@@ -0,0 +1,38 @@
+#!/bin/sh
+#------------------------------------------------------------------------------
+# =========                 |
+# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+#  \\    /   O peration     |
+#   \\  /    A nd           | Copyright (C) 2017 OpenFOAM Foundation
+#    \\/     M anipulation  |
+#-------------------------------------------------------------------------------
+# 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/>.
+#
+# Script
+#     supersededByPostProcess
+#
+# Description
+#     Script to suggest using the new "postProcess" utility.
+#
+#------------------------------------------------------------------------------
+DyMsolver=${0##*/}
+solver=$(echo $DyMsolver | sed 's/DyM//')
+
+echo "The dynamic mesh functionality in $DyMsolver has been merged into $solver"
+echo "and the $DyMsolver tutorials moved into the $solver tutorials directory"
+
+#------------------------------------------------------------------------------

src/dynamicFvMesh/dynamicFvMesh/dynamicFvMesh.H

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  | Copyright (C) 2018 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
@@ -37,8 +37,6 @@ SourceFiles
 #define dynamicFvMesh_H
 
 #include "fvMesh.H"
-#include "autoPtr.H"
-#include "runTimeSelectionTables.H"
 
 #define MOVING_MESH
 
@@ -117,7 +115,9 @@ public:
 
     // Selectors
 
-        //- Select null constructed
+        //- Select, construct and return the dynamicFvMesh
+        //  If the constant/dynamicMeshDict does not exist
+        //  a staticFvMesh is returned
         static autoPtr<dynamicFvMesh> New(const IOobject& io);
 
 
@@ -131,13 +131,16 @@ public:
         virtual bool update() = 0;
 };
 
-
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 } // End namespace Foam
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
+#include "staticFvMesh.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
 #endif
 
 // ************************************************************************* //

src/dynamicFvMesh/dynamicFvMesh/dynamicFvMeshNew.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -24,8 +24,6 @@ License
 \*---------------------------------------------------------------------------*/
 
 #include "dynamicFvMesh.H"
-#include "Time.H"
-#include "dlLibraryTable.H"
 
 // * * * * * * * * * * * * * * * * Selectors * * * * * * * * * * * * * * * * //
 
@@ -36,9 +34,7 @@ Foam::autoPtr<Foam::dynamicFvMesh> Foam::dynamicFvMesh::New(const IOobject& io)
     // - defaultRegion (region0) gets loaded from constant, other ones
     //   get loaded from constant/<regionname>. Normally we'd use
     //   polyMesh::dbDir() but we haven't got a polyMesh yet ...
-    IOdictionary dict
+    IOobject dictHeader
-    (
-        IOobject
     (
         "dynamicMeshDict",
         io.time().constant(),
@@ -47,9 +43,12 @@ Foam::autoPtr<Foam::dynamicFvMesh> Foam::dynamicFvMesh::New(const IOobject& io)
         IOobject::MUST_READ_IF_MODIFIED,
         IOobject::NO_WRITE,
         false
-        )
     );
 
+    if (dictHeader.typeHeaderOk<IOdictionary>(true))
+    {
+        IOdictionary dict(dictHeader);
+
         const word dynamicFvMeshTypeName(dict.lookup("dynamicFvMesh"));
 
         Info<< "Selecting dynamicFvMesh " << dynamicFvMeshTypeName << endl;
@@ -68,14 +67,15 @@ Foam::autoPtr<Foam::dynamicFvMesh> Foam::dynamicFvMesh::New(const IOobject& io)
                 << exit(FatalError);
         }
 
-    auto cstrIter = IOobjectConstructorTablePtr_->cfind(dynamicFvMeshTypeName);
+        IOobjectConstructorTable::iterator cstrIter =
+            IOobjectConstructorTablePtr_->find(dynamicFvMeshTypeName);
 
-    if (!cstrIter.found())
+        if (cstrIter == IOobjectConstructorTablePtr_->end())
         {
             FatalErrorInFunction
                 << "Unknown dynamicFvMesh type "
                 << dynamicFvMeshTypeName << nl << nl
-            << "Valid dynamicFvMesh types :" << endl
+                << "Valid dynamicFvMesh types are :" << endl
                 << IOobjectConstructorTablePtr_->sortedToc()
                 << exit(FatalError);
         }
@@ -83,5 +83,8 @@ Foam::autoPtr<Foam::dynamicFvMesh> Foam::dynamicFvMesh::New(const IOobject& io)
         return autoPtr<dynamicFvMesh>(cstrIter()(io));
     }
 
+    return autoPtr<dynamicFvMesh>(new staticFvMesh(io));
+}
+
 
 // ************************************************************************* //

src/finiteVolume/cfdTools/incompressible/createUfIfPresent.H

@@ -0,0 +1,51 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2017 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+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/>.
+
+Global
+    createUf
+
+Description
+    Creates and initialises the velocity field Uf if present.
+
+\*---------------------------------------------------------------------------*/
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+autoPtr<surfaceVectorField> Uf;
+
+IOobject UfHeader
+(
+    "Uf",
+    runTime.timeName(),
+    mesh,
+    IOobject::MUST_READ,
+    IOobject::AUTO_WRITE
+);
+
+if (UfHeader.typeHeaderOk<surfaceVectorField>(true))
+{
+    Info<< "Reading face velocity Uf\n" << endl;
+    Uf = new surfaceVectorField(UfHeader, mesh);
+}
+
+// ************************************************************************* //

src/finiteVolume/cfdTools/incompressible/updateUf.H

@@ -0,0 +1,55 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2017 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+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/>.
+
+Global
+    updateUf
+
+Description
+    Constructs the face velocity field Uf if not already constructed.
+
+\*---------------------------------------------------------------------------*/
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+if (mesh.changing())
+{
+    if (!Uf.valid())
+    {
+        Info<< "Constructing face velocity Uf" << endl;
+
+        Uf = new surfaceVectorField
+        (
+            IOobject
+            (
+                "Uf",
+                runTime.timeName(),
+                mesh,
+                IOobject::READ_IF_PRESENT,
+                IOobject::AUTO_WRITE
+            ),
+            fvc::interpolate(U)
+        );
+    }
+}
+
+// ************************************************************************* //

src/finiteVolume/finiteVolume/fvc/fvcDdt.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -201,6 +201,31 @@ ddtCorr
 }
 
 
+template<class Type>
+tmp<GeometricField<typename flux<Type>::type, fvsPatchField, surfaceMesh>>
+ddtCorr
+(
+    const GeometricField<Type, fvPatchField, volMesh>& U,
+    const GeometricField
+    <
+        typename flux<Type>::type,
+        fvsPatchField,
+        surfaceMesh
+    >& phi,
+    const autoPtr<GeometricField<Type, fvsPatchField, surfaceMesh>>& Uf
+)
+{
+    if (U.mesh().changing())
+    {
+        return ddtCorr(U, Uf());
+    }
+    else
+    {
+        return ddtCorr(U, phi);
+    }
+}
+
+
 template<class Type>
 tmp<GeometricField<typename flux<Type>::type, fvsPatchField, surfaceMesh>>
 ddtCorr
@@ -240,6 +265,32 @@ ddtCorr
 }
 
 
+template<class Type>
+tmp<GeometricField<typename flux<Type>::type, fvsPatchField, surfaceMesh>>
+ddtCorr
+(
+    const volScalarField& rho,
+    const GeometricField<Type, fvPatchField, volMesh>& U,
+    const GeometricField
+    <
+        typename flux<Type>::type,
+        fvsPatchField,
+        surfaceMesh
+    >& phi,
+    const autoPtr<GeometricField<Type, fvsPatchField, surfaceMesh>>& Uf
+)
+{
+    if (U.mesh().changing())
+    {
+        return ddtCorr(rho, U, Uf());
+    }
+    else
+    {
+        return ddtCorr(rho, U, phi);
+    }
+}
+
+
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 } // End namespace fvc

src/finiteVolume/finiteVolume/fvc/fvcDdt.H

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -154,6 +154,28 @@ namespace fvc
         >& phi
     );
 
+    template<class Type>
+    tmp
+    <
+        GeometricField
+        <
+            typename Foam::flux<Type>::type,
+            fvsPatchField,
+            surfaceMesh
+        >
+    >
+    ddtCorr
+    (
+        const GeometricField<Type, fvPatchField, volMesh>& U,
+        const GeometricField
+        <
+            typename Foam::flux<Type>::type,
+            fvsPatchField,
+            surfaceMesh
+        >& phi,
+        const autoPtr<GeometricField<Type, fvsPatchField, surfaceMesh>>& Uf
+    );
+
     template<class Type>
     tmp
     <
@@ -192,6 +214,29 @@ namespace fvc
             surfaceMesh
         >& phi
     );
+
+    template<class Type>
+    tmp
+    <
+        GeometricField
+        <
+            typename Foam::flux<Type>::type,
+            fvsPatchField,
+            surfaceMesh
+        >
+    >
+    ddtCorr
+    (
+        const volScalarField& rho,
+        const GeometricField<Type, fvPatchField, volMesh>& U,
+        const GeometricField
+        <
+            typename Foam::flux<Type>::type,
+            fvsPatchField,
+            surfaceMesh
+        >& phi,
+        const autoPtr<GeometricField<Type, fvsPatchField, surfaceMesh>>& Uf
+    );
 }
 
 

src/finiteVolume/finiteVolume/fvc/fvcMeshPhi.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -219,4 +219,41 @@ Foam::tmp<Foam::surfaceScalarField> Foam::fvc::absolute
 }
 
 
+void Foam::fvc::correctUf
+(
+    autoPtr<surfaceVectorField>& Uf,
+    const volVectorField& U,
+    const surfaceScalarField& phi
+)
+{
+    const fvMesh& mesh = U.mesh();
+
+    if (mesh.changing())
+    {
+        Uf() = fvc::interpolate(U);
+        surfaceVectorField n(mesh.Sf()/mesh.magSf());
+        Uf() += n*(phi/mesh.magSf() - (n & Uf()));
+    }
+}
+
+
+void Foam::fvc::correctRhoUf
+(
+    autoPtr<surfaceVectorField>& rhoUf,
+    const volScalarField& rho,
+    const volVectorField& U,
+    const surfaceScalarField& phi
+)
+{
+    const fvMesh& mesh = U.mesh();
+
+    if (mesh.changing())
+    {
+        rhoUf() = fvc::interpolate(rho*U);
+        surfaceVectorField n(mesh.Sf()/mesh.magSf());
+        rhoUf() += n*(fvc::absolute(phi, rho, U)/mesh.magSf() - (n & rhoUf()));
+    }
+}
+
+
 // ************************************************************************* //

src/finiteVolume/finiteVolume/fvc/fvcMeshPhi.H

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2014 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -147,6 +147,21 @@ namespace fvc
         const volScalarField& rho,
         const volVectorField& U
     );
+
+    void correctUf
+    (
+        autoPtr<surfaceVectorField>& Uf,
+        const volVectorField& U,
+        const surfaceScalarField& phi
+    );
+
+    void correctRhoUf
+    (
+        autoPtr<surfaceVectorField>& rhoUf,
+        const volScalarField& rho,
+        const volVectorField& U,
+        const surfaceScalarField& phi
+    );
 }
 
 

tutorials/incompressible/pimpleFoam/RAS/oscillatingInletACMI2D/system/controlDict

@@ -15,7 +15,7 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-application     pimpleDyMFoam;
+application     pimpleFoam;
 
 startFrom       latestTime;
 

tutorials/incompressible/pimpleFoam/RAS/propeller/constant/turbulenceProperties

@@ -0,0 +1,30 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "constant";
+    object      turbulenceProperties;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+simulationType  RAS;
+
+RAS
+{
+    RASModel        kEpsilon;
+
+    turbulence      on;
+
+    printCoeffs     on;
+}
+
+
+// ************************************************************************* //

tutorials/incompressible/pimpleFoam/RAS/propeller/system/controlDict

@@ -15,7 +15,7 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-application     pimpleDyMFoam;
+application     pimpleFoam;
 
 startFrom       startTime;
 

tutorials/incompressible/pimpleFoam/RAS/wingMotion/Allclean

@@ -6,6 +6,6 @@ cd ${0%/*} || exit 1                        # Run from this directory
 
 ( cd wingMotion2D_simpleFoam && cleanCase0 )
 
-( cd wingMotion2D_pimpleDyMFoam && cleanCase0 )
+( cd wingMotion2D_pimpleFoam && cleanCase0 )
 
 #------------------------------------------------------------------------------

tutorials/incompressible/pimpleFoam/RAS/wingMotion/Allrun

@@ -23,7 +23,7 @@ cd ${0%/*} || exit 1                        # Run from this directory
 # Copy mesh from the steady state case, map the results to a mesh motion case,
 # then solve transient.
 (
-    cd wingMotion2D_pimpleDyMFoam || exit 1
+    cd wingMotion2D_pimpleFoam || exit 1
 
     \rm -rf constant/polyMesh
     \cp -r ../wingMotion2D_simpleFoam/constant/polyMesh constant

tutorials/incompressible/pimpleFoam/RAS/wingMotion/wingMotion2D_pimpleFoam/system/controlDict

@@ -15,7 +15,7 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-application     pimpleDyMFoam;
+application     pimpleFoam;
 
 startFrom       startTime;