nutUWallFunctionFvPatchScalarField.C

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#include "nutUWallFunctionFvPatchScalarField.H"
#include "momentumTransportModel.H"
#include "fvPatchFieldMapper.H"
#include "volFields.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //
 
tmp<scalarField> nutUWallFunctionFvPatchScalarField::nut() const
{
    const label patchi = patch().index();
 
    const momentumTransportModel& turbModel =
        db().lookupType<momentumTransportModel>(internalField().group());
 
    const tmp<scalarField> tnuw = turbModel.nu(patchi);
    const scalarField& nuw = tnuw();
 
    const fvPatchVectorField& Uw = turbModel.U().boundaryField()[patchi];
    const scalarField magUp(mag(Uw.patchInternalField() - Uw));
 
    const scalarField yPlus(this->yPlus(magUp));
 
    tmp<scalarField> tnutw(new scalarField(patch().size(), 0.0));
    scalarField& nutw = tnutw.ref();
 
    forAll(yPlus, facei)
    {
        if (yPlus[facei] > yPlusLam_)
        {
            nutw[facei] =
                nuw[facei]*(yPlus[facei]*kappa_/log(E_*yPlus[facei]) - 1);
        }
    }
 
    return tnutw;
}
 
 
tmp<scalarField> nutUWallFunctionFvPatchScalarField::yPlus
(
    const scalarField& magUp
) const
{
    const label patchi = patch().index();
 
    const momentumTransportModel& turbModel =
        db().lookupType<momentumTransportModel>(internalField().group());
 
    const scalarField& y = turbModel.y()[patchi];
    const tmp<scalarField> tnuw = turbModel.nu(patchi);
    const scalarField& nuw = tnuw();
 
    tmp<scalarField> tyPlus(new scalarField(patch().size(), 0.0));
    scalarField& yPlus = tyPlus.ref();
 
    forAll(yPlus, facei)
    {
        const scalar Re = magUp[facei]*y[facei]/nuw[facei];
        const scalar ryPlusLam = 1/yPlusLam_;
 
        int iter = 0;
        scalar yp = yPlusLam_;
        scalar yPlusLast = yp;
 
        do
        {
            yPlusLast = yp;
            if (yp > yPlusLam_)
            {
                yp = (kappa_*Re + yp)/(1 + log(E_*yp));
            }
            else
            {
                yp = sqrt(Re);
            }
        } while(mag(ryPlusLam*(yp - yPlusLast)) > 0.0001 && ++iter < 20);
 
        yPlus[facei] = yp;
    }
 
    return tyPlus;
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
nutUWallFunctionFvPatchScalarField::nutUWallFunctionFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const dictionary& dict
)
:
    nutWallFunctionFvPatchScalarField(p, iF, dict)
{}
 
 
nutUWallFunctionFvPatchScalarField::nutUWallFunctionFvPatchScalarField
(
    const nutUWallFunctionFvPatchScalarField& ptf,
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    nutWallFunctionFvPatchScalarField(ptf, p, iF, mapper)
{}
 
 
nutUWallFunctionFvPatchScalarField::nutUWallFunctionFvPatchScalarField
(
    const nutUWallFunctionFvPatchScalarField& sawfpsf,
    const DimensionedField<scalar, volMesh>& iF
)
:
    nutWallFunctionFvPatchScalarField(sawfpsf, iF)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
tmp<scalarField> nutUWallFunctionFvPatchScalarField::yPlus() const
{
    const label patchi = patch().index();
 
 
    const momentumTransportModel& turbModel =
        db().lookupType<momentumTransportModel>(internalField().group());
 
    const fvPatchVectorField& Uw = turbModel.U().boundaryField()[patchi];
    const scalarField magUp(mag(Uw.patchInternalField() - Uw));
 
    return yPlus(magUp);
}
 
 
void nutUWallFunctionFvPatchScalarField::write(Ostream& os) const
{
    fvPatchField<scalar>::write(os);
    writeLocalEntries(os);
    writeEntry(os, "value", *this);
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
makePatchTypeField
(
    fvPatchScalarField,
    nutUWallFunctionFvPatchScalarField
);
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// ************************************************************************* //