atmNutkWallFunctionFvPatchScalarField.C

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    Copyright (C) 2020 ENERCON GmbH
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#include "atmNutkWallFunctionFvPatchScalarField.H"
#include "turbulenceModel.H"
#include "fvPatchFieldMapper.H"
#include "volFields.H"
#include "bound.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //
 
tmp<scalarField> atmNutkWallFunctionFvPatchScalarField::calcNut() const
{
    const label patchi = patch().index();
 
    const auto& turbModel = db().lookupObject<turbulenceModel>
    (
        IOobject::groupName
        (
            turbulenceModel::propertiesName,
            internalField().group()
        )
    );
 
    const scalarField& y = turbModel.y()[patchi];
 
    const tmp<volScalarField> tk = turbModel.k();
    const volScalarField& k = tk();
 
    const tmp<scalarField> tnuw = turbModel.nu(patchi);
    const scalarField& nuw = tnuw();
 
    auto tnutw = tmp<scalarField>::New(*this);
    auto& nutw = tnutw.ref();
 
    const scalar Cmu25 = pow025(wallCoeffs_.Cmu());
    const scalar kappa = wallCoeffs_.kappa();
 
    const scalar t = db().time().timeOutputValue();
    const scalarField z0(z0_->value(t));
 
    #ifdef FULLDEBUG
    for (const scalar z : z0)
    {
        if (z < VSMALL)
        {
            FatalErrorInFunction
                << "z0 field can only contain positive values. "
                << "Please check input field z0."
                << exit(FatalError);
        }
    }
    #endif
 
    const labelUList& faceCells = patch().faceCells();
 
    // (HW:Eq. 5)
    forAll(nutw, facei)
    {
        const label celli = faceCells[facei];
 
        const scalar uStar = Cmu25*sqrt(k[celli]);
        const scalar yPlus = uStar*y[facei]/nuw[facei];
        const scalar Edash = (y[facei] + z0[facei])/z0[facei];
 
        nutw[facei] = nuw[facei]*(yPlus*kappa/log(max(Edash, 1 + 1e-4)) - 1);
    }
 
    if (boundNut_)
    {
        nutw = max(nutw, scalar(0));
    }
 
    return tnutw;
}
 
 
void Foam::atmNutkWallFunctionFvPatchScalarField::writeLocalEntries
(
    Ostream& os
) const
{
    os.writeEntryIfDifferent<bool>("boundNut", false, boundNut_);
 
    if (z0_)
    {
        z0_->writeData(os);
    }
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
atmNutkWallFunctionFvPatchScalarField::atmNutkWallFunctionFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF
)
:
    nutkWallFunctionFvPatchScalarField(p, iF),
    boundNut_(true),
    z0_(nullptr)
{}
 
 
atmNutkWallFunctionFvPatchScalarField::atmNutkWallFunctionFvPatchScalarField
(
    const atmNutkWallFunctionFvPatchScalarField& ptf,
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    nutkWallFunctionFvPatchScalarField(ptf, p, iF, mapper),
    boundNut_(ptf.boundNut_),
    z0_(ptf.z0_.clone(p.patch()))
{}
 
 
atmNutkWallFunctionFvPatchScalarField::atmNutkWallFunctionFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const dictionary& dict
)
:
    nutkWallFunctionFvPatchScalarField(p, iF, dict),
    boundNut_(dict.getOrDefault<bool>("boundNut", false)),
    z0_(PatchFunction1<scalar>::New(p.patch(), "z0", dict))
{}
 
 
atmNutkWallFunctionFvPatchScalarField::atmNutkWallFunctionFvPatchScalarField
(
    const atmNutkWallFunctionFvPatchScalarField& rwfpsf
)
:
    nutkWallFunctionFvPatchScalarField(rwfpsf),
    boundNut_(rwfpsf.boundNut_),
    z0_(rwfpsf.z0_.clone(this->patch().patch()))
{}
 
 
atmNutkWallFunctionFvPatchScalarField::atmNutkWallFunctionFvPatchScalarField
(
    const atmNutkWallFunctionFvPatchScalarField& rwfpsf,
    const DimensionedField<scalar, volMesh>& iF
)
:
    nutkWallFunctionFvPatchScalarField(rwfpsf, iF),
    boundNut_(rwfpsf.boundNut_),
    z0_(rwfpsf.z0_.clone(this->patch().patch()))
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void atmNutkWallFunctionFvPatchScalarField::autoMap
(
    const fvPatchFieldMapper& m
)
{
    nutkWallFunctionFvPatchScalarField::autoMap(m);
 
    if (z0_)
    {
        z0_->autoMap(m);
    }
}
 
 
void atmNutkWallFunctionFvPatchScalarField::rmap
(
    const fvPatchScalarField& ptf,
    const labelList& addr
)
{
    nutkWallFunctionFvPatchScalarField::rmap(ptf, addr);
 
    const auto& nrwfpsf =
        refCast<const atmNutkWallFunctionFvPatchScalarField>(ptf);
 
    if (z0_)
    {
        z0_->rmap(nrwfpsf.z0_(), addr);
    }
}
 
 
void atmNutkWallFunctionFvPatchScalarField::write(Ostream& os) const
{
    nutWallFunctionFvPatchScalarField::write(os);
    writeLocalEntries(os);
    fvPatchField<scalar>::writeValueEntry(os);
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
makePatchTypeField
(
    fvPatchScalarField,
    atmNutkWallFunctionFvPatchScalarField
);
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// ************************************************************************* //