buoyantPressureFvPatchScalarField.C

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/*---------------------------------------------------------------------------*\
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     \\/     M anipulation  |
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License
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#include "buoyantPressureFvPatchScalarField.H"
#include <OpenFOAM/addToRunTimeSelectionTable.H>
#include <finiteVolume/fvPatchFieldMapper.H>
#include <finiteVolume/volFields.H>
#include <OpenFOAM/uniformDimensionedFields.H>

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

buoyantPressureFvPatchScalarField::
buoyantPressureFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF
)
:
    fixedGradientFvPatchScalarField(p, iF),
    rhoName_("rho")
{}


buoyantPressureFvPatchScalarField::
buoyantPressureFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const dictionary& dict
)
:
    fixedGradientFvPatchScalarField(p, iF),
    rhoName_(dict.lookupOrDefault<word>("rho", "rho"))
{
    fvPatchField<scalar>::operator=(patchInternalField());
    gradient() = 0.0;
}


buoyantPressureFvPatchScalarField::
buoyantPressureFvPatchScalarField
(
    const buoyantPressureFvPatchScalarField& ptf,
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const fvPatchFieldMapper& mapper
)
:
    fixedGradientFvPatchScalarField(ptf, p, iF, mapper),
    rhoName_(ptf.rhoName_)
{}


buoyantPressureFvPatchScalarField::
buoyantPressureFvPatchScalarField
(
    const buoyantPressureFvPatchScalarField& ptf
)
:
    fixedGradientFvPatchScalarField(ptf),
    rhoName_(ptf.rhoName_)
{}


buoyantPressureFvPatchScalarField::
buoyantPressureFvPatchScalarField
(
    const buoyantPressureFvPatchScalarField& ptf,
    const DimensionedField<scalar, volMesh>& iF
)
:
    fixedGradientFvPatchScalarField(ptf, iF),
    rhoName_(ptf.rhoName_)
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

void buoyantPressureFvPatchScalarField::updateCoeffs()
{
    if (updated())
    {
        return;
    }

    const uniformDimensionedVectorField& g =
        db().lookupObject<uniformDimensionedVectorField>("g");

    const fvPatchField<scalar>& rho =
        patch().lookupPatchField<volScalarField, scalar>(rhoName_);

    // If the variable name is "p_rgh", "ph_rgh" or "pd"
    // assume it is p? - rho*g.h and set the gradient appropriately.
    // Otherwise assume the variable is the static pressure.
    if
    (
        dimensionedInternalField().name() == "p_rgh"
     || dimensionedInternalField().name() == "ph_rgh"
     || dimensionedInternalField().name() == "pd"
    )
    {
        gradient() = -rho.snGrad()*(g.value() & patch().Cf());
    }
    else
    {
        gradient() = rho*(g.value() & patch().nf());
    }

    fixedGradientFvPatchScalarField::updateCoeffs();
}


void buoyantPressureFvPatchScalarField::write(Ostream& os) const
{
    fixedGradientFvPatchScalarField::write(os);
    os.writeKeyword("rho") << rhoName_ << token::END_STATEMENT << nl;
    writeEntry("value", os);
}


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

makePatchTypeField
(
    fvPatchScalarField,
    buoyantPressureFvPatchScalarField
);

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// ************************ vim: set sw=4 sts=4 et: ************************ //