gaussFaLaplacianScheme.C

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-------------------------------------------------------------------------------
    Copyright (C) 2016-2017 Wikki Ltd
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
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#include "gaussFaLaplacianScheme.H"
#include "facDiv.H"
#include "faMatrices.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace fa
{
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
template<class Type>
tmp<faMatrix<Type>>
gaussLaplacianScheme<Type>::famLaplacian
(
    const edgeScalarField& gamma,
    const GeometricField<Type, faPatchField, areaMesh>& vf
)
{
    tmp<edgeScalarField> tdeltaCoeffs = this->tlnGradScheme_().deltaCoeffs(vf);
    const edgeScalarField& deltaCoeffs = tdeltaCoeffs();
 
    const edgeScalarField gammaMagSf(gamma*this->mesh().magLe());
 
    tmp<faMatrix<Type>> tfam
    (
        new faMatrix<Type>
        (
            vf,
            deltaCoeffs.dimensions()*gammaMagSf.dimensions()*vf.dimensions()
        )
    );
    faMatrix<Type>& fam = tfam.ref();
 
    fam.upper() = deltaCoeffs.internalField()*gammaMagSf.internalField();
    fam.negSumDiag();
 
    forAll(fam.psi().boundaryField(), patchI)
    {
        const faPatchField<Type>& psf = fam.psi().boundaryField()[patchI];
        const faePatchScalarField& patchGamma =
            gammaMagSf.boundaryField()[patchI];
 
        fam.internalCoeffs()[patchI] = patchGamma*psf.gradientInternalCoeffs();
        fam.boundaryCoeffs()[patchI] =
            -patchGamma*psf.gradientBoundaryCoeffs();
    }
 
    if (this->tlnGradScheme_().corrected())
    {
        if (this->mesh().fluxRequired(vf.name()))
        {
            fam.faceFluxCorrectionPtr() = new
            GeometricField<Type, faePatchField, edgeMesh>
            (
                gammaMagSf*this->tlnGradScheme_().correction(vf)
            );
 
            fam.source() -=
                this->mesh().S()
               *fac::div
                (
                    *fam.faceFluxCorrectionPtr()
                )().internalField();
        }
        else
        {
            fam.source() -=
                this->mesh().S()
               *fac::div
                (
                    gammaMagSf*this->tlnGradScheme_().correction(vf)
                )().internalField();
        }
    }
 
    return tfam;
}
 
 
template<class Type>
tmp<GeometricField<Type, faPatchField, areaMesh>>
gaussLaplacianScheme<Type>::facLaplacian
(
    const GeometricField<Type, faPatchField, areaMesh>& vf
)
{
    tmp<GeometricField<Type, faPatchField, areaMesh>> tLaplacian
    (
        fac::div(this->tlnGradScheme_().lnGrad(vf)*vf.mesh().magLe())
    );
 
    tLaplacian.ref().rename("laplacian(" + vf.name() + ')');
 
    return tLaplacian;
}
 
 
template<class Type>
tmp<GeometricField<Type, faPatchField, areaMesh>>
gaussLaplacianScheme<Type>::facLaplacian
(
    const edgeScalarField& gamma,
    const GeometricField<Type, faPatchField, areaMesh>& vf
)
{
    tmp<GeometricField<Type, faPatchField, areaMesh>> tLaplacian
    (
        fac::div(gamma*this->tlnGradScheme_().lnGrad(vf)*vf.mesh().magLe())
    );
 
    tLaplacian.ref().rename
    (
        "laplacian(" + gamma.name() + ',' + vf.name() + ')'
    );
 
    return tLaplacian;
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fa
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// ************************************************************************* //