openfoam/applications/utilities/postProcessing/wall/yPlusRAS/yPlusRAS.C

/*---------------------------------------------------------------------------*\
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    \\  /    A nd           | Copyright (C) 1991-2009 OpenCFD Ltd.
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-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

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    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Application
    yPlusRAS

Description
    Calculates and reports yPlus for all wall patches, for the specified times
    when using RAS turbulence models.

    Default behaviour assumes operating in incompressible mode. To apply to
    compressible RAS cases, use the -compressible option.

\*---------------------------------------------------------------------------*/

#include "fvCFD.H"

#include "incompressible/singlePhaseTransportModel/singlePhaseTransportModel.H"
#include "incompressible/RAS/RASModel/RASModel.H"
#include "nutkWallFunction/nutkWallFunctionFvPatchScalarField.H"

#include "basicPsiThermo.H"
#include "compressible/RAS/RASModel/RASModel.H"
#include "mutkWallFunction/mutkWallFunctionFvPatchScalarField.H"

#include "wallDist.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

void calcIncompressibleYPlus
(
    const fvMesh& mesh,
    const Time& runTime,
    const volVectorField& U,
    volScalarField& yPlus
)
{
    typedef incompressible::RASModels::nutkWallFunctionFvPatchScalarField
        wallFunctionPatchField;

    #include "createPhi.H"

    singlePhaseTransportModel laminarTransport(U, phi);

    autoPtr<incompressible::RASModel> RASModel
    (
        incompressible::RASModel::New(U, phi, laminarTransport)
    );

    const volScalarField::GeometricBoundaryField nutPatches =
        RASModel->nut()().boundaryField();

    bool foundNutPatch = false;
    forAll(nutPatches, patchi)
    {
        if (isA<wallFunctionPatchField>(nutPatches[patchi]))
        {
            foundNutPatch = true;

            const wallFunctionPatchField& nutPw =
                dynamic_cast<const wallFunctionPatchField&>
                    (nutPatches[patchi]);

            yPlus.boundaryField()[patchi] = nutPw.yPlus();
            const scalarField& Yp = yPlus.boundaryField()[patchi];

            Info<< "Patch " << patchi
                << " named " << nutPw.patch().name()
                << " y+ : min: " << min(Yp) << " max: " << max(Yp)
                << " average: " << average(Yp) << nl << endl;
        }
    }

    if (!foundNutPatch)
    {
        Info<< "    no " << wallFunctionPatchField::typeName << " patches"
            << endl;
    }
}


void calcCompressibleYPlus
(
    const fvMesh& mesh,
    const Time& runTime,
    const volVectorField& U,
    volScalarField& yPlus
)
{
    typedef compressible::RASModels::mutkWallFunctionFvPatchScalarField
        wallFunctionPatchField;

    IOobject rhoHeader
    (
        "rho",
        runTime.timeName(),
        mesh,
        IOobject::MUST_READ,
        IOobject::NO_WRITE
    );

    if (!rhoHeader.headerOk())
    {
        Info<< "    no rho field" << endl;
        return;
    }

    Info << "Reading field rho\n" << endl;
    volScalarField rho(rhoHeader, mesh);

    #include "compressibleCreatePhi.H"

    autoPtr<basicPsiThermo> pThermo
    (
        basicPsiThermo::New(mesh)
    );
    basicPsiThermo& thermo = pThermo();

    autoPtr<compressible::RASModel> RASModel
    (
        compressible::RASModel::New
        (
            rho,
            U,
            phi,
            thermo
        )
    );

    const volScalarField::GeometricBoundaryField mutPatches =
        RASModel->mut()().boundaryField();

    bool foundMutPatch = false;
    forAll(mutPatches, patchi)
    {
        if (isA<wallFunctionPatchField>(mutPatches[patchi]))
        {
            foundMutPatch = true;

            const wallFunctionPatchField& mutPw =
                dynamic_cast<const wallFunctionPatchField&>
                    (mutPatches[patchi]);

            yPlus.boundaryField()[patchi] = mutPw.yPlus();
            const scalarField& Yp = yPlus.boundaryField()[patchi];

            Info<< "Patch " << patchi
                << " named " << mutPw.patch().name()
                << " y+ : min: " << min(Yp) << " max: " << max(Yp)
                << " average: " << average(Yp) << nl << endl;
        }
    }

    if (!foundMutPatch)
    {
        Info<< "    no " << wallFunctionPatchField::typeName << " patches"
            << endl;
    }
}


int main(int argc, char *argv[])
{
    timeSelector::addOptions();

    #include "addRegionOption.H"

    argList::validOptions.insert("compressible","");

    #include "setRootCase.H"
    #include "createTime.H"
    instantList timeDirs = timeSelector::select0(runTime, args);
    #include "createNamedMesh.H"

    bool compressible = args.optionFound("compressible");

    forAll(timeDirs, timeI)
    {
        runTime.setTime(timeDirs[timeI], timeI);
        Info<< "Time = " << runTime.timeName() << endl;
        fvMesh::readUpdateState state = mesh.readUpdate();

        // Wall distance
        if (timeI == 0 || state != fvMesh::UNCHANGED)
        {
            Info<< "Calculating wall distance\n" << endl;
            wallDist y(mesh, true);
            Info<< "Writing wall distance to field "
                << y.name() << nl << endl;
            y.write();
        }

        volScalarField yPlus
        (
            IOobject
            (
                "yPlus",
                runTime.timeName(),
                mesh,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            mesh,
            dimensionedScalar("yPlus", dimless, 0.0)
        );

        IOobject UHeader
        (
            "U",
            runTime.timeName(),
            mesh,
            IOobject::MUST_READ,
            IOobject::NO_WRITE
        );

        if (UHeader.headerOk())
        {
            Info << "Reading field U\n" << endl;
            volVectorField U(UHeader, mesh);

            if (compressible)
            {
                calcCompressibleYPlus(mesh, runTime, U, yPlus);
            }
            else
            {
                calcIncompressibleYPlus(mesh, runTime, U, yPlus);
            }
        }
        else
        {
            Info<< "    no U field" << endl;
        }

        Info<< "Writing yPlus to field " << yPlus.name() << nl << endl;

        yPlus.write();
    }

    Info<< "End\n" << endl;

    return 0;
}


// ************************************************************************* //