linearUpwindTemplates.C

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#include "linearUpwind.H"
#include "fvcGrad.H"
 
// * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * * //
 
template<class Type>
Foam::linearUpwind<Type>::linearUpwind
(
    const fvMesh& mesh,
    const surfaceScalarField& faceFlux
)
:
    upwind<Type>(mesh, faceFlux),
    gradSchemeName_("grad")
{}
 
 
template<class Type>
Foam::linearUpwind<Type>::linearUpwind
(
    const fvMesh& mesh,
    Istream& schemeData
)
:
    upwind<Type>(mesh, schemeData),
    gradSchemeName_(schemeData)
{}
 
 
template<class Type>
Foam::linearUpwind<Type>::linearUpwind
(
    const fvMesh& mesh,
    const surfaceScalarField& faceFlux,
    Istream& schemeData
)
:
    upwind<Type>(mesh, faceFlux, schemeData),
    gradSchemeName_(schemeData)
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class Type>
Foam::tmp<Foam::SurfaceField<Type>>
Foam::linearUpwind<Type>::correction
(
    const VolField<Type>& vf
) const
{
    const fvMesh& mesh = this->mesh();
 
    tmp<SurfaceField<Type>> tsfCorr
    (
        SurfaceField<Type>::New
        (
            "linearUpwind::correction(" + vf.name() + ')',
            mesh,
            dimensioned<Type>(vf.name(), vf.dimensions(), Zero)
        )
    );
 
    SurfaceField<Type>& sfCorr = tsfCorr.ref();
 
    const surfaceScalarField& faceFlux = this->faceFlux_;
 
    const labelList& owner = mesh.owner();
    const labelList& neighbour = mesh.neighbour();
 
    const volVectorField& C = mesh.C();
    const surfaceVectorField& Cf = mesh.Cf();
 
    tmp<fv::gradScheme<scalar>> gradScheme_
    (
        fv::gradScheme<scalar>::New
        (
            mesh,
            mesh.schemes().grad(gradSchemeName_)
        )
    );
 
    for (direction cmpt = 0; cmpt < pTraits<Type>::nComponents; cmpt++)
    {
        tmp<volVectorField> tgradVf =
            gradScheme_().grad(vf.component(cmpt), gradSchemeName_);
 
        const volVectorField& gradVf = tgradVf();
 
        forAll(faceFlux, facei)
        {
            const label celli =
                (faceFlux[facei] > 0) ? owner[facei] : neighbour[facei];
 
            setComponent(sfCorr[facei], cmpt) =
                (Cf[facei] - C[celli]) & gradVf[celli];
        }
 
        typename SurfaceField<Type>::
            Boundary& bSfCorr = sfCorr.boundaryFieldRef();
 
        forAll(bSfCorr, patchi)
        {
            fvsPatchField<Type>& pSfCorr = bSfCorr[patchi];
 
            if (pSfCorr.coupled())
            {
                const labelUList& pOwner = mesh.boundary()[patchi].faceCells();
                const vectorField& pCf = Cf.boundaryField()[patchi];
                const scalarField& pFaceFlux = faceFlux.boundaryField()[patchi];
 
                const vectorField pGradVfNei
                (
                    gradVf.boundaryField()[patchi].patchNeighbourField()
                );
 
                // Build the d-vectors
                const vectorField pd
                (
                    Cf.boundaryField()[patchi].patch().delta()
                );
 
                forAll(pOwner, facei)
                {
                    const label own = pOwner[facei];
 
                    if (pFaceFlux[facei] > 0)
                    {
                        setComponent(pSfCorr[facei], cmpt) =
                            (pCf[facei] - C[own])
                          & gradVf[own];
                    }
                    else
                    {
                        setComponent(pSfCorr[facei], cmpt) =
                            (pCf[facei] - pd[facei] - C[own])
                          & pGradVfNei[facei];
                    }
                }
            }
        }
    }
 
    return tsfCorr;
}
 
 
// ************************************************************************* //