isotropicDamping.C

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License
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#include "isotropicDamping.H"
#include "fvMatrix.H"
#include "fvmSup.H"
#include "addToRunTimeSelectionTable.H"

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

namespace Foam
{
namespace fv
{
    defineTypeNameAndDebug(isotropicDamping, 0);
    addToRunTimeSelectionTable(fvModel, isotropicDamping, dictionary);
}
}


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

void Foam::fv::isotropicDamping::readCoeffs()
{
    value_ =
        dimensionedVector
        (
            value_.name(),
            value_.dimensions(),
            coeffs().lookup(value_.name())
        );
}


void Foam::fv::isotropicDamping::add
(
    const volScalarField::Internal& forceCoeff,
    fvMatrix<vector>& eqn
) const
{
    eqn -= fvm::Sp(forceCoeff, eqn.psi());
    eqn += forceCoeff*value_;
}


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

Foam::fv::isotropicDamping::isotropicDamping
(
    const word& name,
    const word& modelType,
    const dictionary& dict,
    const fvMesh& mesh
)
:
    damping(name, modelType, dict, mesh),
    value_("value", dimVelocity, vector::uniform(NaN))
{
    readCoeffs();
}


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

void Foam::fv::isotropicDamping::addSup
(
    fvMatrix<vector>& eqn,
    const word& fieldName
) const
{
    add(this->forceCoeff(), eqn);
}


void Foam::fv::isotropicDamping::addSup
(
    const volScalarField& rho,
    fvMatrix<vector>& eqn,
    const word& fieldName
) const
{
    add(rho*forceCoeff(), eqn);
}


void Foam::fv::isotropicDamping::addSup
(
    const volScalarField& alpha,
    const volScalarField& rho,
    fvMatrix<vector>& eqn,
    const word& fieldName
) const
{
    add(alpha()*rho()*this->forceCoeff(), eqn);
}


bool Foam::fv::isotropicDamping::read(const dictionary& dict)
{
    if (damping::read(dict))
    {
        readCoeffs();
        return true;
    }
    else
    {
        return false;
    }
}


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