fixedCoeff.C

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#include "addToRunTimeSelectionTable.H"
#include "fixedCoeff.H"
#include "fvMatrices.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
    namespace porosityModels
    {
        defineTypeNameAndDebug(fixedCoeff, 0);
        addToRunTimeSelectionTable(porosityModel, fixedCoeff, mesh);
    }
}
 
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
void Foam::porosityModels::fixedCoeff::apply
(
    scalarField& Udiag,
    vectorField& Usource,
    const scalarField& V,
    const vectorField& U,
    const scalar rho
) const
{
    const labelList& cells = mesh_.cellZones()[zoneName_];
 
    forAll(cells, i)
    {
        const label celli = cells[i];
        const label j = fieldIndex(i);
        const tensor Cd = rho*(alpha_[j] + beta_[j]*mag(U[celli]));
        const scalar isoCd = tr(Cd);
 
        Udiag[celli] += V[celli]*isoCd;
        Usource[celli] -= V[celli]*((Cd - I*isoCd) & U[celli]);
    }
}
 
 
void Foam::porosityModels::fixedCoeff::apply
(
    tensorField& AU,
    const vectorField& U,
    const scalar rho
) const
{
    const labelList& cells = mesh_.cellZones()[zoneName_];
 
    forAll(cells, i)
    {
        const label celli = cells[i];
        const label j = fieldIndex(i);
        const tensor alpha = alpha_[j];
        const tensor beta = beta_[j];
 
        AU[celli] += rho*(alpha + beta*mag(U[celli]));
    }
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::porosityModels::fixedCoeff::fixedCoeff
(
    const word& name,
    const word& modelType,
    const fvMesh& mesh,
    const dictionary& dict,
    const word& cellZoneName
)
:
    porosityModel(name, modelType, mesh, dict, cellZoneName),
    alphaXYZ_("alpha", dimless/dimTime, coeffs_),
    betaXYZ_("beta", dimless/dimLength, coeffs_)
{
    adjustNegativeResistance(alphaXYZ_);
    adjustNegativeResistance(betaXYZ_);
 
    calcTransformModelData();
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::porosityModels::fixedCoeff::~fixedCoeff()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
void Foam::porosityModels::fixedCoeff::calcTransformModelData()
{
    if (coordSys_.R().uniform())
    {
        alpha_.setSize(1);
        beta_.setSize(1);
 
        alpha_[0] = Zero;
        alpha_[0].xx() = alphaXYZ_.value().x();
        alpha_[0].yy() = alphaXYZ_.value().y();
        alpha_[0].zz() = alphaXYZ_.value().z();
        alpha_[0] = coordSys_.R().transform(Zero, alpha_[0]);
 
        beta_[0] = Zero;
        beta_[0].xx() = betaXYZ_.value().x();
        beta_[0].yy() = betaXYZ_.value().y();
        beta_[0].zz() = betaXYZ_.value().z();
        beta_[0] = coordSys_.R().transform(Zero, beta_[0]);
    }
    else
    {
        const labelList& cells = mesh_.cellZones()[zoneName_];
 
        alpha_.setSize(cells.size());
        beta_.setSize(cells.size());
 
        forAll(cells, i)
        {
            alpha_[i] = Zero;
            alpha_[i].xx() = alphaXYZ_.value().x();
            alpha_[i].yy() = alphaXYZ_.value().y();
            alpha_[i].zz() = alphaXYZ_.value().z();
 
            beta_[i] = Zero;
            beta_[i].xx() = betaXYZ_.value().x();
            beta_[i].yy() = betaXYZ_.value().y();
            beta_[i].zz() = betaXYZ_.value().z();
        }
 
        const coordinateRotation& R = coordSys_.R
        (
            UIndirectList<vector>(mesh_.C(), cells)()
        );
 
        alpha_ = R.transform(alpha_);
        beta_ = R.transform(beta_);
    }
}
 
 
void Foam::porosityModels::fixedCoeff::calcForce
(
    const volVectorField& U,
    const volScalarField& rho,
    const volScalarField& mu,
    vectorField& force
) const
{
    scalarField Udiag(U.size(), 0.0);
    vectorField Usource(U.size(), Zero);
    const scalarField& V = mesh_.V();
    scalar rhoRef = coeffs_.lookup<scalar>("rhoRef");
 
    apply(Udiag, Usource, V, U, rhoRef);
 
    force = Udiag*U - Usource;
}
 
 
void Foam::porosityModels::fixedCoeff::correct
(
    fvVectorMatrix& UEqn
) const
{
    const vectorField& U = UEqn.psi();
    const scalarField& V = mesh_.V();
    scalarField& Udiag = UEqn.diag();
    vectorField& Usource = UEqn.source();
 
    scalar rho = 1.0;
    if (UEqn.dimensions() == dimForce)
    {
        coeffs_.lookup("rhoRef") >> rho;
    }
 
    apply(Udiag, Usource, V, U, rho);
}
 
 
void Foam::porosityModels::fixedCoeff::correct
(
    const fvVectorMatrix& UEqn,
    volTensorField& AU
) const
{
    const vectorField& U = UEqn.psi();
 
    scalar rho = 1.0;
    if (UEqn.dimensions() == dimForce)
    {
        coeffs_.lookup("rhoRef") >> rho;
    }
 
    apply(AU, U, rho);
}
 
 
bool Foam::porosityModels::fixedCoeff::writeData(Ostream& os) const
{
    os  << indent << name_ << endl;
    dict_.write(os);
 
    return true;
}
 
 
// ************************************************************************* //