gaussConvectionScheme.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

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#include "gaussConvectionScheme.H"
#include <finiteVolume/fvcSurfaceIntegrate.H>
#include <finiteVolume/fvMatrices.H>

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace fv
{

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

template<class Type>
tmp<GeometricField<Type, fvsPatchField, surfaceMesh> >
gaussConvectionScheme<Type>::interpolate
(
    const surfaceScalarField&,
    const GeometricField<Type, fvPatchField, volMesh>& vf
) const
{
    return tinterpScheme_().interpolate(vf);
}


template<class Type>
tmp<GeometricField<Type, fvsPatchField, surfaceMesh> >
gaussConvectionScheme<Type>::flux
(
    const surfaceScalarField& faceFlux,
    const GeometricField<Type, fvPatchField, volMesh>& vf
) const
{
    return faceFlux*interpolate(faceFlux, vf);
}


template<class Type>
tmp<fvMatrix<Type> >
gaussConvectionScheme<Type>::fvmDiv
(
    const surfaceScalarField& faceFlux,
    GeometricField<Type, fvPatchField, volMesh>& vf
) const
{
    tmp<surfaceScalarField> tweights = tinterpScheme_().weights(vf);
    const surfaceScalarField& weights = tweights();

    tmp<fvMatrix<Type> > tfvm
    (
        new fvMatrix<Type>
        (
            vf,
            faceFlux.dimensions()*vf.dimensions()
        )
    );
    fvMatrix<Type>& fvm = tfvm();

    fvm.lower() = -weights.internalField()*faceFlux.internalField();
    fvm.upper() = fvm.lower() + faceFlux.internalField();
    fvm.negSumDiag();

    forAll(fvm.psi().boundaryField(), patchI)
    {
        const fvPatchField<Type>& psf = fvm.psi().boundaryField()[patchI];
        const fvsPatchScalarField& patchFlux = faceFlux.boundaryField()[patchI];
        const fvsPatchScalarField& pw = weights.boundaryField()[patchI];

        fvm.internalCoeffs()[patchI] = patchFlux*psf.valueInternalCoeffs(pw);
        fvm.boundaryCoeffs()[patchI] = -patchFlux*psf.valueBoundaryCoeffs(pw);
    }

    if (tinterpScheme_().corrected())
    {
        fvm += fvc::surfaceIntegrate(faceFlux*tinterpScheme_().correction(vf));
    }

    return tfvm;
}


template<class Type>
tmp<GeometricField<Type, fvPatchField, volMesh> >
gaussConvectionScheme<Type>::fvcDiv
(
    const surfaceScalarField& faceFlux,
    const GeometricField<Type, fvPatchField, volMesh>& vf
) const
{
    tmp<GeometricField<Type, fvPatchField, volMesh> > tConvection
    (
        fvc::surfaceIntegrate(flux(faceFlux, vf))
    );

    tConvection().rename
    (
        "convection(" + faceFlux.name() + ',' + vf.name() + ')'
    );

    return tConvection;
}


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace fv

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

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