isotropicDamping.C

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License
    This file is part of OpenFOAM.
 
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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()
{
    readLambda();
 
    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 fvMesh& mesh,
    const dictionary& dict
)
:
    forcing(name, modelType, mesh, dict),
    UName_(coeffs().lookupOrDefault<word>("U", "U")),
    value_("value", dimVelocity, vector::uniform(NaN))
{
    readCoeffs();
    writeForceFields();
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::wordList Foam::fv::isotropicDamping::addSupFields() const
{
    return wordList(1, UName_);
}
 
 
void Foam::fv::isotropicDamping::addSup
(
    const volVectorField& U,
    fvMatrix<vector>& eqn
) const
{
    add(this->forceCoeff(), eqn);
}
 
 
void Foam::fv::isotropicDamping::addSup
(
    const volScalarField& rho,
    const volVectorField& U,
    fvMatrix<vector>& eqn
) const
{
    add(rho*this->forceCoeff(), eqn);
}
 
 
void Foam::fv::isotropicDamping::addSup
(
    const volScalarField& alpha,
    const volScalarField& rho,
    const volVectorField& U,
    fvMatrix<vector>& eqn
) const
{
    add(alpha()*rho()*this->forceCoeff(), eqn);
}
 
 
bool Foam::fv::isotropicDamping::movePoints()
{
    return true;
}
 
 
void Foam::fv::isotropicDamping::topoChange(const polyTopoChangeMap&)
{}
 
 
void Foam::fv::isotropicDamping::mapMesh(const polyMeshMap& map)
{}
 
 
void Foam::fv::isotropicDamping::distribute(const polyDistributionMap&)
{}
 
 
bool Foam::fv::isotropicDamping::read(const dictionary& dict)
{
    if (forcing::read(dict))
    {
        readCoeffs();
        return true;
    }
    else
    {
        return false;
    }
}
 
 
// ************************************************************************* //