snGradScheme.C

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2019-2021 OpenCFD 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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    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
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\*---------------------------------------------------------------------------*/
 
#include "fv.H"
#include "snGradScheme.H"
#include "volFields.H"
#include "surfaceFields.H"
#include "HashTable.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace fv
{
 
// * * * * * * * * * * * * * * * * * Selectors * * * * * * * * * * * * * * * //
 
template<class Type>
tmp<snGradScheme<Type>> snGradScheme<Type>::New
(
    const fvMesh& mesh,
    Istream& schemeData
)
{
    if (fv::debug)
    {
        InfoInFunction << "Constructing snGradScheme<Type>" << endl;
    }
 
    if (schemeData.eof())
    {
        FatalIOErrorInFunction(schemeData)
            << "Discretisation scheme not specified"
            << nl << nl
            << "Valid schemes are :" << nl
            << MeshConstructorTablePtr_->sortedToc()
            << exit(FatalIOError);
    }
 
    const word schemeName(schemeData);
 
    auto* ctorPtr = MeshConstructorTable(schemeName);
 
    if (!ctorPtr)
    {
        FatalIOErrorInLookup
        (
            schemeData,
            "discretisation",
            schemeName,
            *MeshConstructorTablePtr_
        ) << exit(FatalIOError);
    }
 
    return ctorPtr(mesh, schemeData);
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class Type>
tmp<GeometricField<Type, fvsPatchField, surfaceMesh>>
snGradScheme<Type>::snGrad
(
    const GeometricField<Type, fvPatchField, volMesh>& vf,
    const tmp<surfaceScalarField>& tdeltaCoeffs,
    const word& snGradName
)
{
    const fvMesh& mesh = vf.mesh();
 
    // construct GeometricField<Type, fvsPatchField, surfaceMesh>
    tmp<GeometricField<Type, fvsPatchField, surfaceMesh>> tsf
    (
        new GeometricField<Type, fvsPatchField, surfaceMesh>
        (
            IOobject
            (
                snGradName + "("+vf.name()+')',
                vf.instance(),
                vf.mesh(),
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            mesh,
            vf.dimensions()*tdeltaCoeffs().dimensions()
        )
    );
    GeometricField<Type, fvsPatchField, surfaceMesh>& ssf = tsf.ref();
    ssf.setOriented();
 
    // set reference to difference factors array
    const scalarField& deltaCoeffs = tdeltaCoeffs();
 
    // owner/neighbour addressing
    const labelUList& owner = mesh.owner();
    const labelUList& neighbour = mesh.neighbour();
 
    forAll(owner, facei)
    {
        ssf[facei] =
            deltaCoeffs[facei]*(vf[neighbour[facei]] - vf[owner[facei]]);
    }
 
    typename GeometricField<Type, fvsPatchField, surfaceMesh>::
        Boundary& ssfbf = ssf.boundaryFieldRef();
 
    forAll(vf.boundaryField(), patchi)
    {
        const fvPatchField<Type>& pvf = vf.boundaryField()[patchi];
 
        if (pvf.coupled())
        {
            ssfbf[patchi] = pvf.snGrad(tdeltaCoeffs().boundaryField()[patchi]);
        }
        else
        {
            ssfbf[patchi] = pvf.snGrad();
        }
    }
 
    return tsf;
}
 
 
template<class Type>
tmp<GeometricField<Type, fvsPatchField, surfaceMesh>>
snGradScheme<Type>::sndGrad
(
    const GeometricField<Type, fvPatchField, volMesh>& vf,
    const word& sndGradName
)
{
    return snGrad(vf, vf.mesh().nonOrthDeltaCoeffs(), sndGradName);
}
 
 
template<class Type>
tmp<GeometricField<Type, fvsPatchField, surfaceMesh>>
snGradScheme<Type>::snGrad
(
    const GeometricField<Type, fvPatchField, volMesh>& vf
) const
{
    tmp<GeometricField<Type, fvsPatchField, surfaceMesh>> tsf
    (
        snGrad(vf, deltaCoeffs(vf))
    );
 
    if (corrected())
    {
        tsf.ref() += correction(vf);
    }
 
    return tsf;
}
 
 
template<class Type>
tmp<GeometricField<Type, fvsPatchField, surfaceMesh>>
snGradScheme<Type>::snGrad
(
    const tmp<GeometricField<Type, fvPatchField, volMesh>>& tvf
) const
{
    tmp<GeometricField<Type, fvsPatchField, surfaceMesh>> tsf
    (
        snGrad(tvf())
    );
 
    tsf.clear();
    return tsf;
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// ************************************************************************* //