Foam::tmp<Foam::GeometricField<Type, Foam::fvsPatchField, Foam::surfaceMesh> >
Foam::linearUpwind<Type>::correction
(
const GeometricField<Type, fvPatchField, volMesh>& vf
) const
{
const fvMesh& mesh = this->mesh();
tmp<GeometricField<Type, fvsPatchField, surfaceMesh> > tsfCorr
(
new GeometricField<Type, fvsPatchField, surfaceMesh>
(
IOobject
(
"linearUpwind::correction(" + vf.name() + ')',
mesh.time().timeName(),
mesh,
IOobject::NO_READ,
IOobject::NO_WRITE,
false
),
mesh,
dimensioned<Type>(vf.name(), vf.dimensions(), pTraits<Type>::zero)
)
);
GeometricField<Type, fvsPatchField, surfaceMesh>& sfCorr = tsfCorr();
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
<
GeometricField
<
typename outerProduct<vector, Type>::type,
fvPatchField,
volMesh
>
> tgradVf = gradScheme_().grad(vf, gradSchemeName_);
const GeometricField
<
typename outerProduct<vector, Type>::type,
fvPatchField,
volMesh
>& gradVf = tgradVf();
forAll(faceFlux, facei)
{
label celli = (faceFlux[facei] > 0) ? owner[facei] : neighbour[facei];
sfCorr[facei] = (Cf[facei] - C[celli]) & gradVf[celli];
}
Foam::tmp<Foam::GeometricField<Type, Foam::fvsPatchField, Foam::surfaceMesh> >
Foam::linearUpwindV<Type>::correction
(
const GeometricField<Type, fvPatchField, volMesh>& vf
) const
{
const fvMesh& mesh = this->mesh();
tmp<GeometricField<Type, fvsPatchField, surfaceMesh> > tsfCorr
(
new GeometricField<Type, fvsPatchField, surfaceMesh>
(
IOobject
(
vf.name(),
mesh.time().timeName(),
mesh
),
mesh,
dimensioned<Type>
(
vf.name(),
vf.dimensions(),
pTraits<Type>::zero
)
)
);
GeometricField<Type, fvsPatchField, surfaceMesh>& sfCorr = tsfCorr();
const surfaceScalarField& faceFlux = this->faceFlux_;
const surfaceScalarField& w = mesh.weights();
const labelList& own = mesh.owner();
const labelList& nei = mesh.neighbour();
const vectorField& C = mesh.C();
const vectorField& Cf = mesh.Cf();
GeometricField
<typename outerProduct<vector, Type>::type, fvPatchField, volMesh>
gradVf = gradScheme_().grad(vf);
forAll(faceFlux, facei)
{
vector maxCorr;
if (faceFlux[facei] > 0.0)
{
maxCorr =
(1.0 - w[facei])
*(vf[nei[facei]] - vf[own[facei]]);
sfCorr[facei] =
(Cf[facei] - C[own[facei]]) & gradVf[own[facei]];
}
else
{
maxCorr =
w[facei]*(vf[own[facei]] - vf[nei[facei]]);
sfCorr[facei] =
(Cf[facei] - C[nei[facei]]) & gradVf[nei[facei]];
}
scalar sfCorrs = magSqr(sfCorr[facei]);
scalar maxCorrs = sfCorr[facei] & maxCorr;
if (sfCorrs > 0)
{
if (maxCorrs < 0)
{
sfCorr[facei] = vector::zero;
}
else if (sfCorrs > maxCorrs)
{
sfCorr[facei] *= maxCorrs/(sfCorrs + VSMALL);
}
}
else if (sfCorrs < 0)
{
if (maxCorrs > 0)
{
sfCorr[facei] = vector::zero;
}
else if (sfCorrs < maxCorrs)
{
sfCorr[facei] *= maxCorrs/(sfCorrs - VSMALL);
}
}
}
Foam::tmp<Foam::GeometricField<Type, Foam::fvsPatchField, Foam::surfaceMesh> >
Foam::linearUpwindV<Type>::correction
(
const GeometricField<Type, fvPatchField, volMesh>& vf
) const
{
const fvMesh& mesh = this->mesh();
tmp<GeometricField<Type, fvsPatchField, surfaceMesh> > tsfCorr
(
new GeometricField<Type, fvsPatchField, surfaceMesh>
(
IOobject
(
"linearUpwindCorrection(" + vf.name() + ')',
mesh.time().timeName(),
mesh,
IOobject::NO_READ,
IOobject::NO_WRITE,
false
),
mesh,
dimensioned<Type>(vf.name(), vf.dimensions(), pTraits<Type>::zero)
)
);
GeometricField<Type, fvsPatchField, surfaceMesh>& sfCorr = tsfCorr();
const surfaceScalarField& faceFlux = this->faceFlux_;
const surfaceScalarField& w = mesh.weights();
const labelList& own = mesh.owner();
const labelList& nei = mesh.neighbour();
const volVectorField& C = mesh.C();
const surfaceVectorField& Cf = mesh.Cf();
GeometricField
<typename outerProduct<vector, Type>::type, fvPatchField, volMesh>
gradVf = gradScheme_().grad(vf);
// Note: in order for the patchNeighbourField to be correct on coupled
// boundaries, correctBoundaryConditions needs to be called.
// The call shall be moved into the library fvc operators
gradVf.correctBoundaryConditions();
forAll(faceFlux, facei)
{
vector maxCorr;
if (faceFlux[facei] > 0)
{
maxCorr =
(1 - w[facei])*(vf[nei[facei]] - vf[own[facei]]);
sfCorr[facei] =
(Cf[facei] - C[own[facei]]) & gradVf[own[facei]];
}
else
{
maxCorr =
w[facei]*(vf[own[facei]] - vf[nei[facei]]);
sfCorr[facei] =
(Cf[facei] - C[nei[facei]]) & gradVf[nei[facei]];
}
scalar sfCorrs = magSqr(sfCorr[facei]);
scalar maxCorrs = sfCorr[facei] & maxCorr;
if (sfCorrs > 0)
{
if (maxCorrs < 0)
{
sfCorr[facei] = vector::zero;
}
else if (sfCorrs > maxCorrs)
{
sfCorr[facei] *= maxCorrs/(sfCorrs + VSMALL);
}
}
else if (sfCorrs < 0)
{
if (maxCorrs > 0)
{
sfCorr[facei] = vector::zero;
}
else if (sfCorrs < maxCorrs)
{
sfCorr[facei] *= maxCorrs/(sfCorrs - VSMALL);
}
}
}
