PoissonPatchDistMethod.C

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License
    This file is part of OpenFOAM.
 
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    for more details.
 
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#include "PoissonPatchDistMethod.H"
#include "fvcGrad.H"
#include "fvmLaplacian.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace patchDistMethods
{
    defineTypeNameAndDebug(Poisson, 0);
    addToRunTimeSelectionTable(patchDistMethod, Poisson, dictionary);
}
}
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::patchDistMethods::Poisson::Poisson
(
    const dictionary& dict,
    const fvMesh& mesh,
    const labelHashSet& patchIDs
)
:
    patchDistMethod(mesh, patchIDs)
{}
 
 
Foam::patchDistMethods::Poisson::Poisson
(
    const fvMesh& mesh,
    const labelHashSet& patchIDs
)
:
    patchDistMethod(mesh, patchIDs)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
bool Foam::patchDistMethods::Poisson::correct(volScalarField& y)
{
    return correct(y, const_cast<volVectorField&>(volVectorField::null()));
}
 
 
bool Foam::patchDistMethods::Poisson::correct
(
    volScalarField& y,
    volVectorField& n
)
{
    if (!tyPsi_.valid())
    {
        tyPsi_ = tmp<volScalarField>
        (
            volScalarField::New
            (
                "yPsi",
                mesh_,
                dimensionedScalar(sqr(dimLength), 0),
                y.boundaryFieldRef().types()
            )
        );
    }
    volScalarField& yPsi = tyPsi_.ref();
 
    solve(fvm::laplacian(yPsi) == dimensionedScalar(dimless, -1.0));
 
    volVectorField gradyPsi(fvc::grad(yPsi));
    volScalarField magGradyPsi(mag(gradyPsi));
 
    y = sqrt(magSqr(gradyPsi) + 2*yPsi) - magGradyPsi;
 
    // Cache yPsi if the mesh is moving otherwise delete
    if (!mesh_.changing())
    {
        tyPsi_.clear();
    }
 
    // Only calculate n if the field is defined
    if (notNull(n))
    {
        n =
           -gradyPsi
           /max
            (
                magGradyPsi,
                dimensionedScalar(dimLength, small)
            );
    }
 
    return true;
}
 
 
// ************************************************************************* //