convectiveHeatTransferFvPatchScalarField.C

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#include "convectiveHeatTransferFvPatchScalarField.H"
#include "fluidThermophysicalTransportModel.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace compressible
{
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
convectiveHeatTransferFvPatchScalarField::
convectiveHeatTransferFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const dictionary& dict
)
:
    fixedValueFvPatchScalarField(p, iF, dict),
    L_(dict.lookup<scalar>("L"))
{}
 
 
convectiveHeatTransferFvPatchScalarField::
convectiveHeatTransferFvPatchScalarField
(
    const convectiveHeatTransferFvPatchScalarField& ptf,
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    fixedValueFvPatchScalarField(ptf, p, iF, mapper),
    L_(ptf.L_)
{}
 
 
convectiveHeatTransferFvPatchScalarField::
convectiveHeatTransferFvPatchScalarField
(
    const convectiveHeatTransferFvPatchScalarField& htcpsf,
    const DimensionedField<scalar, volMesh>& iF
)
:
    fixedValueFvPatchScalarField(htcpsf, iF),
    L_(htcpsf.L_)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void convectiveHeatTransferFvPatchScalarField::updateCoeffs()
{
    if (updated())
    {
        return;
    }
 
    const label patchi = patch().index();
 
    const fluidThermophysicalTransportModel& ttm =
        db().lookupType<fluidThermophysicalTransportModel>
        (
            internalField().group()
        );
 
    const compressibleMomentumTransportModel& turbModel =
        ttm.momentumTransport();
 
    const tmp<scalarField> tnuw = turbModel.nu(patchi);
    const scalarField& nuw = tnuw();
 
    const scalarField& rhow = turbModel.rho().boundaryField()[patchi];
    const vectorField& Uc = turbModel.U();
    const vectorField& Uw = turbModel.U().boundaryField()[patchi];
    const scalarField Cpw(ttm.thermo().Cp().boundaryField()[patchi]);
 
    const scalarField kappaEffw(ttm.kappaEff(patchi));
    const scalarField Pr(rhow*nuw*Cpw/kappaEffw);
 
    scalarField& htc = *this;
    forAll(htc, facei)
    {
        const label celli = patch().faceCells()[facei];
 
        const scalar Re = mag(Uc[celli] - Uw[facei])*L_/nuw[facei];
 
        if (Re < 5.0E+05)
        {
            htc[facei] = 0.664*sqrt(Re)*cbrt(Pr[facei])*kappaEffw[facei]/L_;
        }
        else
        {
            htc[facei] = 0.037*pow(Re, 0.8)*cbrt(Pr[facei])*kappaEffw[facei]/L_;
        }
    }
 
    fixedValueFvPatchScalarField::updateCoeffs();
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void convectiveHeatTransferFvPatchScalarField::write(Ostream& os) const
{
    fvPatchField<scalar>::write(os);
    writeEntry(os, "L", L_);
    writeEntry(os, "value", *this);
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
makePatchTypeField
(
    fvPatchScalarField,
    convectiveHeatTransferFvPatchScalarField
);
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace compressible
} // End namespace Foam
 
// ************************************************************************* //