atmAlphatkWallFunctionFvPatchScalarField.C

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/*---------------------------------------------------------------------------*\
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-------------------------------------------------------------------------------
    Copyright (C) 2020 ENERCON GmbH
    Copyright (C) 2020 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
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    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.
 
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
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#include "atmAlphatkWallFunctionFvPatchScalarField.H"
#include "turbulenceModel.H"
#include "fvPatchFieldMapper.H"
#include "volFields.H"
#include "wallFvPatch.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
scalar atmAlphatkWallFunctionFvPatchScalarField::tolerance_ = 0.01;
 
label atmAlphatkWallFunctionFvPatchScalarField::maxIters_ = 10;
 
 
// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //
 
void atmAlphatkWallFunctionFvPatchScalarField::checkType()
{
    if (!isA<wallFvPatch>(patch()))
    {
        FatalErrorInFunction
            << "Invalid wall function specification" << nl
            << "    Patch type for patch " << patch().name()
            << " must be wall" << nl
            << "    Current patch type is " << patch().type() << nl << endl
            << abort(FatalError);
    }
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
atmAlphatkWallFunctionFvPatchScalarField::
atmAlphatkWallFunctionFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF
)
:
    fixedValueFvPatchScalarField(p, iF),
    Cmu_(0.09),
    kappa_(0.41),
    Pr_(db().time(), "Pr"),
    Prt_(nullptr),
    z0_(nullptr)
{
    checkType();
}
 
 
atmAlphatkWallFunctionFvPatchScalarField::
atmAlphatkWallFunctionFvPatchScalarField
(
    const atmAlphatkWallFunctionFvPatchScalarField& ptf,
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    fixedValueFvPatchScalarField(ptf, p, iF, mapper),
    Cmu_(ptf.Cmu_),
    kappa_(ptf.kappa_),
    Pr_(ptf.Pr_),
    Prt_(ptf.Prt_.clone(p.patch())),
    z0_(ptf.z0_.clone(p.patch()))
{
    checkType();
}
 
 
atmAlphatkWallFunctionFvPatchScalarField::
atmAlphatkWallFunctionFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const dictionary& dict
)
:
    fixedValueFvPatchScalarField(p, iF, dict),
    Cmu_
    (
        dict.getCheckOrDefault<scalar>
        (
            "Cmu",
            0.09,
            scalarMinMax::ge(0)
        )
    ),
    kappa_
    (
        dict.getCheckOrDefault<scalar>
        (
            "kappa",
            0.41,
            scalarMinMax::ge(0)
        )
    ),
    Pr_(TimeFunction1<scalar>(db().time(), "Pr", dict)),
    Prt_(PatchFunction1<scalar>::New(p.patch(), "Prt", dict)),
    z0_(PatchFunction1<scalar>::New(p.patch(), "z0", dict))
{
    checkType();
}
 
 
atmAlphatkWallFunctionFvPatchScalarField::
atmAlphatkWallFunctionFvPatchScalarField
(
    const atmAlphatkWallFunctionFvPatchScalarField& wfpsf
)
:
    fixedValueFvPatchScalarField(wfpsf),
    Cmu_(wfpsf.Cmu_),
    kappa_(wfpsf.kappa_),
    Pr_(wfpsf.Pr_),
    Prt_(wfpsf.Prt_.clone(this->patch().patch())),
    z0_(wfpsf.z0_.clone(this->patch().patch()))
{
    checkType();
}
 
 
atmAlphatkWallFunctionFvPatchScalarField::
atmAlphatkWallFunctionFvPatchScalarField
(
    const atmAlphatkWallFunctionFvPatchScalarField& wfpsf,
    const DimensionedField<scalar, volMesh>& iF
)
:
    fixedValueFvPatchScalarField(wfpsf, iF),
    Cmu_(wfpsf.Cmu_),
    kappa_(wfpsf.kappa_),
    Pr_(wfpsf.Pr_),
    Prt_(wfpsf.Prt_.clone(this->patch().patch())),
    z0_(wfpsf.z0_.clone(this->patch().patch()))
{
    checkType();
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void atmAlphatkWallFunctionFvPatchScalarField::updateCoeffs()
{
    if (updated())
    {
        return;
    }
 
    const label patchi = patch().index();
 
    // Retrieve turbulence properties from model
    const turbulenceModel& turbModel = db().lookupObject<turbulenceModel>
    (
        IOobject::groupName
        (
            turbulenceModel::propertiesName,
            internalField().group()
        )
    );
 
    const scalarField& y = turbModel.y()[patchi];
 
    const tmp<scalarField> tnuw = turbModel.nu(patchi);
    const scalarField& nuw = tnuw();
 
    const tmp<volScalarField> tk = turbModel.k();
    const volScalarField& k = tk();
 
    const scalar Cmu25 = pow025(Cmu_);
 
    const scalar t = db().time().timeOutputValue();
    const scalar Pr = Pr_.value(t);
 
    #ifdef FULLDEBUG
    if (Pr < VSMALL)
    {
        FatalErrorInFunction
            << "Pr cannot be negative or zero. "
            << "Please check input Pr = " << Pr
            << exit(FatalIOError);
    }
    #endif
 
    const scalarField Prt(Prt_->value(t));
    const scalarField z0(z0_->value(t));
 
    #ifdef FULLDEBUG
    forAll(Prt, i)
    {
        if (Prt[i] < VSMALL || z0[i] < VSMALL)
        {
            FatalErrorInFunction
                << "Elements of input surface fields can only be positive. "
                << "Please check input fields z0 and Prt."
                << exit(FatalIOError);
        }
    }
    #endif
 
    const labelUList& faceCells = patch().faceCells();
 
    scalarField& alphatw = *this;
 
    forAll(alphatw, facei)
    {
        const label celli = faceCells[facei];
 
        const scalar uStar = Cmu25*Foam::sqrt(k[celli]);
        const scalar Edash = (y[facei] + z0[facei])/(z0[facei] + 1e-4);
 
        // Update turbulent thermal conductivity
        alphatw[facei] =
            uStar*kappa_*y[facei]/(Prt[facei]*log(max(Edash, 1 + 1e-4)))
          + nuw[facei]/Pr;
    }
 
    // lower bound values to avoid unrealistic
    // negative temperatures on the ground
    alphatw = max(alphatw, scalar(0.01));
 
    fixedValueFvPatchField<scalar>::updateCoeffs();
}
 
 
void atmAlphatkWallFunctionFvPatchScalarField::autoMap
(
    const fvPatchFieldMapper& m
)
{
    fixedValueFvPatchScalarField::autoMap(m);
    Prt_->autoMap(m);
    z0_->autoMap(m);
}
 
 
void atmAlphatkWallFunctionFvPatchScalarField::rmap
(
    const fvPatchScalarField& ptf,
    const labelList& addr
)
{
    fixedValueFvPatchScalarField::rmap(ptf, addr);
 
    const atmAlphatkWallFunctionFvPatchScalarField& nrwfpsf =
        refCast<const atmAlphatkWallFunctionFvPatchScalarField>(ptf);
 
    z0_->rmap(nrwfpsf.z0_(), addr);
    Prt_->rmap(nrwfpsf.Prt_(), addr);
}
 
 
void atmAlphatkWallFunctionFvPatchScalarField::write(Ostream& os) const
{
    fvPatchField<scalar>::write(os);
    os.writeEntry("Cmu", Cmu_);
    os.writeEntry("kappa", kappa_);
    Pr_.writeData(os);
    Prt_->writeData(os);
    z0_->writeData(os);
    writeEntry("value", os);
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
makePatchTypeField
(
    fvPatchScalarField,
    atmAlphatkWallFunctionFvPatchScalarField
);
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// ************************************************************************* //