wideBandDiffusiveRadiationMixedFvPatchScalarField.C

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     \\/     M anipulation  |
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    for more details.
 
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#include "wideBandDiffusiveRadiationMixedFvPatchScalarField.H"
#include "addToRunTimeSelectionTable.H"
#include "fvPatchFieldMapper.H"
#include "volFields.H"
 
#include "fvDOM.H"
#include "wideBandAbsorptionEmission.H"
#include "constants.H"
#include "boundaryRadiationProperties.H"
 
using namespace Foam::constant;
using namespace Foam::constant::mathematical;
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::
wideBandDiffusiveRadiationMixedFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF
)
:
    mixedFvPatchScalarField(p, iF)
{
    refValue() = 0.0;
    refGrad() = 0.0;
    valueFraction() = 1.0;
}
 
 
Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::
wideBandDiffusiveRadiationMixedFvPatchScalarField
(
    const wideBandDiffusiveRadiationMixedFvPatchScalarField& ptf,
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    mixedFvPatchScalarField(ptf, p, iF, mapper)
{}
 
 
Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::
wideBandDiffusiveRadiationMixedFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const dictionary& dict
)
:
    mixedFvPatchScalarField(p, iF)
{
    if (dict.found("value"))
    {
        fvPatchScalarField::operator=
        (
            scalarField("value", dict, p.size())
        );
        refValue() = scalarField("refValue", dict, p.size());
        refGrad() = scalarField("refGradient", dict, p.size());
        valueFraction() = scalarField("valueFraction", dict, p.size());
    }
    else
    {
        refValue() = 0.0;
        refGrad() = 0.0;
        valueFraction() = 1.0;
 
        fvPatchScalarField::operator=(refValue());
    }
}
 
 
Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::
wideBandDiffusiveRadiationMixedFvPatchScalarField
(
    const wideBandDiffusiveRadiationMixedFvPatchScalarField& ptf
)
:
    mixedFvPatchScalarField(ptf)
{}
 
 
Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::
wideBandDiffusiveRadiationMixedFvPatchScalarField
(
    const wideBandDiffusiveRadiationMixedFvPatchScalarField& ptf,
    const DimensionedField<scalar, volMesh>& iF
)
:
    mixedFvPatchScalarField(ptf, iF)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::
updateCoeffs()
{
    if (this->updated())
    {
        return;
    }
 
    // Since we're inside initEvaluate/evaluate there might be processor
    // comms underway. Change the tag we use.
    int oldTag = UPstream::msgType();
    UPstream::msgType() = oldTag+1;
 
    const radiationModel& radiation =
        db().lookupObject<radiationModel>("radiationProperties");
 
    const fvDOM& dom(refCast<const fvDOM>(radiation));
 
    label rayId = -1;
    label lambdaId = -1;
    dom.setRayIdLambdaId(dimensionedInternalField().name(), rayId, lambdaId);
 
    const label patchI = patch().index();
 
    if (dom.nLambda() == 0)
    {
        FatalErrorInFunction
            << " a non-grey boundary condition is used with a grey "
            << "absorption model" << nl << exit(FatalError);
    }
 
    scalarField& Iw = *this;
    const vectorField n(patch().Sf()/patch().magSf());
 
    radiativeIntensityRay& ray =
        const_cast<radiativeIntensityRay&>(dom.IRay(rayId));
 
    const scalarField nAve(n & ray.dAve());
 
    ray.Qr().boundaryField()[patchI] += Iw*nAve;
 
    const scalarField Eb
    (
        dom.blackBody().bLambda(lambdaId).boundaryField()[patchI]
    );
 
    const boundaryRadiationProperties& boundaryRadiation =
        boundaryRadiationProperties::New(dimensionedInternalField().mesh());
 
 
    const tmp<scalarField> temissivity
    (
        boundaryRadiation.emissivity(patch().index(), lambdaId)
    );
 
    const scalarField& emissivity = temissivity();
 
    scalarField& Qem = ray.Qem().boundaryField()[patchI];
    scalarField& Qin = ray.Qin().boundaryField()[patchI];
 
    // Use updated Ir while iterating over rays
    // avoids to used lagged Qin
    scalarField Ir = dom.IRay(0).Qin().boundaryField()[patchI];
 
    for (label rayI=1; rayI < dom.nRay(); rayI++)
    {
        Ir += dom.IRay(rayI).Qin().boundaryField()[patchI];
    }
 
    forAll(Iw, faceI)
    {
        const vector& d = dom.IRay(rayId).d();
 
        if ((-n[faceI] & d) > 0.0)
        {
            // direction out of the wall
            refGrad()[faceI] = 0.0;
            valueFraction()[faceI] = 1.0;
            refValue()[faceI] =
                (
                    Ir[faceI]*(1.0 - emissivity[faceI])
                  + emissivity[faceI]*Eb[faceI]
                )/pi;
 
            // Emmited heat flux from this ray direction
            Qem[faceI] = refValue()[faceI]*nAve[faceI];
        }
        else
        {
            // direction into the wall
            valueFraction()[faceI] = 0.0;
            refGrad()[faceI] = 0.0;
            refValue()[faceI] = 0.0; //not used
 
            // Incident heat flux on this ray direction
            Qin[faceI] = Iw[faceI]*nAve[faceI];
        }
    }
 
    // Restore tag
    UPstream::msgType() = oldTag;
 
    mixedFvPatchScalarField::updateCoeffs();
}
 
 
void Foam::radiation::wideBandDiffusiveRadiationMixedFvPatchScalarField::write
(
    Ostream& os
) const
{
    mixedFvPatchScalarField::write(os);
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace radiation
{
    makePatchTypeField
    (
        fvPatchScalarField,
        wideBandDiffusiveRadiationMixedFvPatchScalarField
    );
}
}
 
 
// ************************************************************************* //