fusedGaussDivScheme.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2024 M. Janssens
-------------------------------------------------------------------------------
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.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    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/>.
 
\*---------------------------------------------------------------------------*/
 
#include "fvcSurfaceOps.H"
#include "fusedGaussDivScheme.H"
#include "fvcSurfaceIntegrate.H"
#include "fvMatrices.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace fv
{
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
template<class Type>
tmp
<
    GeometricField
    <typename innerProduct<vector, Type>::type, fvPatchField, volMesh>
>
fusedGaussDivScheme<Type>::fvcDiv
(
    const GeometricField<Type, fvPatchField, volMesh>& vf
)
{
    typedef typename innerProduct<vector, Type>::type DivType;
    typedef GeometricField<DivType, fvPatchField, volMesh> DivFieldType;
 
    const fvMesh& mesh = vf.mesh();
 
    DebugPout<< "fusedGaussDivScheme<Type>::fvcDiv on " << vf.name()
         << endl;
 
    tmp<DivFieldType> tDiv
    (
        new DivFieldType
        (
            IOobject
            (
                "div(" + vf.name() + ')',
                vf.instance(),
                mesh,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            mesh,
            dimensioned<DivType>(vf.dimensions()/dimLength, Zero),
            fvPatchFieldBase::extrapolatedCalculatedType()
        )
    );
    DivFieldType& div = tDiv.ref();
 
    //fvcDiv(vf, this->tinterpScheme_().weights(vf), div);
 
    if (this->tinterpScheme_().corrected())
    {
        const auto tfaceCorr(this->tinterpScheme_().correction(vf));
        auto& faceCorr = tfaceCorr();
 
        const auto dotInterpolate = [&]
        (
            const vector& area,
            const scalar lambda,
 
            const Type& ownVal,
            const Type& neiVal,
 
            const Type& correction
 
        ) -> DivType
        {
            return area & ((lambda*(ownVal - neiVal) + neiVal) + correction);
        };
 
        fvc::surfaceSum
        (
            this->tinterpScheme_().weights(vf),
            vf,
            faceCorr,
            dotInterpolate,
            div,
            false
        );
    }
    else
    {
        const auto dotInterpolate = [&]
        (
            const vector& area,
            const scalar lambda,
            const Type& ownVal,
            const Type& neiVal
        ) -> DivType
        {
            return area & (lambda*(ownVal - neiVal) + neiVal);
        };
 
        fvc::surfaceSum
        (
            this->tinterpScheme_().weights(vf),
            vf,
            dotInterpolate,
            div,
            false
        );
    }
 
    tDiv.ref().primitiveFieldRef() /= mesh.V();
 
    tDiv.ref().correctBoundaryConditions();
 
    return tDiv;
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// ************************************************************************* //