waveSurfacePressureFvPatchScalarField.C

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License
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    for more details.
 
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#include "waveSurfacePressureFvPatchScalarField.H"
#include "addToRunTimeSelectionTable.H"
#include "fieldMapper.H"
#include "volFields.H"
#include "surfaceFields.H"
#include "uniformDimensionedFields.H"
#include "EulerDdtScheme.H"
#include "CrankNicolsonDdtScheme.H"
#include "backwardDdtScheme.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
    template<>
    const char* NamedEnum
    <
        waveSurfacePressureFvPatchScalarField::ddtSchemeType,
        3
    >::names[] =
    {
        fv::EulerDdtScheme<scalar>::typeName_(),
        fv::CrankNicolsonDdtScheme<scalar>::typeName_(),
        fv::backwardDdtScheme<scalar>::typeName_()
    };
}
 
 
const Foam::NamedEnum
<
    Foam::waveSurfacePressureFvPatchScalarField::ddtSchemeType,
    3
>   Foam::waveSurfacePressureFvPatchScalarField::ddtSchemeTypeNames_;
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::waveSurfacePressureFvPatchScalarField::
waveSurfacePressureFvPatchScalarField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const dictionary& dict
)
:
    fixedValueFvPatchScalarField(p, iF, dict),
    phiName_(dict.lookupOrDefault<word>("phi", "phi")),
    zetaName_(dict.lookupOrDefault<word>("zeta", "zeta")),
    rhoName_(dict.lookupOrDefault<word>("rho", "rho"))
{
    if (!db().foundObject<volVectorField>(zetaName_))
    {
        Info << "Creating field " << zetaName_ << endl;
 
        tmp<volVectorField> tzeta
        (
            new volVectorField
            (
                IOobject
                (
                    "zeta",
                    db().time().name(),
                    db(),
                    IOobject::READ_IF_PRESENT,
                    IOobject::AUTO_WRITE
                ),
                patch().boundaryMesh().mesh(),
                dimensionedVector(dimLength, Zero)
            )
        );
 
        regIOobject::store(tzeta.ptr());
    }
}
 
 
Foam::waveSurfacePressureFvPatchScalarField::
waveSurfacePressureFvPatchScalarField
(
    const waveSurfacePressureFvPatchScalarField& ptf,
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const fieldMapper& mapper
)
:
    fixedValueFvPatchScalarField(ptf, p, iF, mapper),
    phiName_(ptf.phiName_),
    zetaName_(ptf.zetaName_),
    rhoName_(ptf.rhoName_)
{}
 
 
Foam::waveSurfacePressureFvPatchScalarField::
waveSurfacePressureFvPatchScalarField
(
    const waveSurfacePressureFvPatchScalarField& wspsf,
    const DimensionedField<scalar, volMesh>& iF
)
:
    fixedValueFvPatchScalarField(wspsf, iF),
    phiName_(wspsf.phiName_),
    zetaName_(wspsf.zetaName_),
    rhoName_(wspsf.rhoName_)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void Foam::waveSurfacePressureFvPatchScalarField::updateCoeffs()
{
    if (updated())
    {
        return;
    }
 
    // Retrieve non-const access to zeta field from the database
    volVectorField& zeta = db().lookupObjectRef<volVectorField>(zetaName_);
 
    const label patchi = patch().index();
 
    const scalar dt = db().time().deltaTValue();
 
    vectorField& zetap = zeta.boundaryFieldRef()[patchi];
 
    // Lookup d/dt scheme from database for zeta
    const word ddtSchemeName(zeta.mesh().schemes().ddt(zeta.name()));
    ddtSchemeType ddtScheme(ddtSchemeTypeNames_[ddtSchemeName]);
 
    // Retrieve the flux field from the database
    const surfaceScalarField& phi =
        db().lookupObject<surfaceScalarField>(phiName_);
 
    const scalarField& rhop =
        patch().lookupPatchField<volScalarField, scalar>(rhoName_);
 
    // Cache the patch face-normal vectors
    tmp<vectorField> nf(patch().nf());
 
    // Change in zeta due to flux
    vectorField dZetap(dt*nf()*phi.boundaryField()[patchi]/patch().magSf());
 
    if (phi.dimensions() == dimMassFlux)
    {
        dZetap /= rhop;
    }
 
    const volVectorField& zeta0 = zeta.oldTime();
 
    switch (ddtScheme)
    {
        case tsEuler:
        case tsCrankNicolson:
        {
            zetap = zeta0.boundaryField()[patchi] + dZetap;
 
            break;
        }
        case tsBackward:
        {
            scalar dt0 = db().time().deltaT0Value();
 
            scalar c = 1.0 + dt/(dt + dt0);
            scalar c00 = dt*dt/(dt0*(dt + dt0));
            scalar c0 = c + c00;
 
            zetap =
                (
                    c0*zeta0.boundaryField()[patchi]
                  - c00*zeta0.oldTime().boundaryField()[patchi]
                  + dZetap
                )/c;
 
            break;
        }
        default:
        {
            FatalErrorInFunction
                << ddtSchemeName << nl
                << "    on patch " << this->patch().name()
                << " of field " << this->internalField().name()
                << " in file " << this->internalField().objectPath()
                << abort(FatalError);
        }
    }
 
    // Update the surface pressure
    const uniformDimensionedVectorField& g =
        db().lookupObject<uniformDimensionedVectorField>("g");
 
    const uniformDimensionedScalarField& pRef =
        this->db().template lookupObject<uniformDimensionedScalarField>("pRef");
 
    operator==(pRef.value() - rhop*(g.value() & zetap));
 
    fixedValueFvPatchScalarField::updateCoeffs();
}
 
 
void Foam::waveSurfacePressureFvPatchScalarField::write(Ostream& os) const
{
    fvPatchScalarField::write(os);
    writeEntryIfDifferent<word>(os, "phi", "phi", phiName_);
    writeEntryIfDifferent<word>(os, "zeta", "zeta", zetaName_);
    writeEntryIfDifferent<word>(os, "rho", "rho", rhoName_);
    writeEntry(os, "value", *this);
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
    makePatchTypeField
    (
        fvPatchScalarField,
        waveSurfacePressureFvPatchScalarField
    );
}
 
// ************************************************************************* //