fixedMultiPhaseHeatFluxFvPatchScalarField.C

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    Copyright (C) 2020-2025 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.
 
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
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#include "fixedMultiPhaseHeatFluxFvPatchScalarField.H"
#include "fvPatchFieldMapper.H"
#include "addToRunTimeSelectionTable.H"
 
#include "phaseSystem.H"
#include "compressibleTurbulenceModel.H"
#include "ThermalDiffusivity.H"
#include "PhaseCompressibleTurbulenceModel.H"
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::fixedMultiPhaseHeatFluxFvPatchScalarField::
fixedMultiPhaseHeatFluxFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF
)
:
    fixedValueFvPatchScalarField(p, iF),
    q_(p.size(), Zero),
    relax_(1),
    Tmin_(273)
{}
 
 
Foam::fixedMultiPhaseHeatFluxFvPatchScalarField::
fixedMultiPhaseHeatFluxFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const dictionary& dict
)
:
    fixedValueFvPatchScalarField(p, iF, dict),
    q_("q", dict, p.size()),
    relax_(dict.getOrDefault<scalar>("relax", 1)),
    Tmin_(dict.getOrDefault<scalar>("Tmin", 273))
{}
 
 
Foam::fixedMultiPhaseHeatFluxFvPatchScalarField::
fixedMultiPhaseHeatFluxFvPatchScalarField
(
    const fixedMultiPhaseHeatFluxFvPatchScalarField& psf,
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    fixedValueFvPatchScalarField(psf, p, iF, mapper),
    q_(psf.q_, mapper),
    relax_(psf.relax_),
    Tmin_(psf.Tmin_)
{}
 
 
Foam::fixedMultiPhaseHeatFluxFvPatchScalarField::
fixedMultiPhaseHeatFluxFvPatchScalarField
(
    const fixedMultiPhaseHeatFluxFvPatchScalarField& psf
)
:
    fixedValueFvPatchScalarField(psf),
    q_(psf.q_),
    relax_(psf.relax_),
    Tmin_(psf.Tmin_)
{}
 
 
Foam::fixedMultiPhaseHeatFluxFvPatchScalarField::
fixedMultiPhaseHeatFluxFvPatchScalarField
(
    const fixedMultiPhaseHeatFluxFvPatchScalarField& psf,
    const DimensionedField<scalar, volMesh>& iF
)
:
    fixedValueFvPatchScalarField(psf, iF),
    q_(psf.q_),
    relax_(psf.relax_),
    Tmin_(psf.Tmin_)
{}
 
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void Foam::fixedMultiPhaseHeatFluxFvPatchScalarField::updateCoeffs()
{
    if (updated())
    {
        return;
    }
 
    // Lookup the fluid model
    const phaseSystem& fluid =
        db().lookupObject<phaseSystem>("phaseProperties");
 
    const scalarField& Tp = *this;
 
    scalarField A(Tp.size(), Zero);
    scalarField B(Tp.size(), Zero);
    scalarField Q(Tp.size(), Zero);
 
    forAll(fluid.phases(), phasei)
    {
        const phaseModel& phase = fluid.phases()[phasei];
        const fluidThermo& thermo = phase.thermo();
 
        const fvPatchScalarField& alpha =
            phase.boundaryField()[patch().index()];
 
        const fvPatchScalarField& T =
            thermo.T().boundaryField()[patch().index()];
 
        const scalarField kappaEff(phase.kappaEff(patch().index()));
 
        if (debug)
        {
            const scalarField q0(T.snGrad()*alpha*kappaEff);
            Q += q0;
 
            auto limits = gMinMax(q0);
 
            Info<< patch().name() << " " << phase.name()
                << ": Heat flux "
                << limits.min() << " - " << limits.max() << endl;
        }
 
        A += T.patchInternalField()*alpha*kappaEff*patch().deltaCoeffs();
        B += alpha*kappaEff*patch().deltaCoeffs();
    }
 
    if (debug)
    {
        auto limits = gMinMax(Q);
 
        Info<< patch().name() << " " << ": overall heat flux "
            << limits.min() << " - " << limits.max() << " W/m2, power: "
            << gWeightedSum(patch().magSf(), Q) << " W" << endl;
    }
 
    operator==((scalar(1) - relax_)*Tp + relax_*max(Tmin_,(q_ + A)/(B)));
 
    fixedValueFvPatchScalarField::updateCoeffs();
}
 
 
void Foam::fixedMultiPhaseHeatFluxFvPatchScalarField::autoMap
(
    const fvPatchFieldMapper& m
)
{
    fixedValueFvPatchScalarField::autoMap(m);
    m(q_);
}
 
 
void Foam::fixedMultiPhaseHeatFluxFvPatchScalarField::rmap
(
    const fvPatchScalarField& ptf,
    const labelList& addr
)
{
    fixedValueFvPatchScalarField::rmap(ptf, addr);
 
    const fixedMultiPhaseHeatFluxFvPatchScalarField& mptf =
        refCast<const fixedMultiPhaseHeatFluxFvPatchScalarField>(ptf);
 
    q_.rmap(mptf.q_, addr);
}
 
 
void Foam::fixedMultiPhaseHeatFluxFvPatchScalarField::write(Ostream& os) const
{
    fvPatchField<scalar>::write(os);
    os.writeEntry("relax", relax_);
    q_.writeEntry("q", os);
    fvPatchField<scalar>::writeValueEntry(os);
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
    makePatchTypeField
    (
        fvPatchScalarField,
        fixedMultiPhaseHeatFluxFvPatchScalarField
    );
}
 
 
// ************************************************************************* //