/usr/include/freefoam/finiteVolume/limitedSnGrad.C is in libfreefoam-dev 0.1.0+dfsg-1build1.
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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
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/>.
Description
snGrad scheme with limited non-orthogonal correction.
The limiter is controlled by a coefficient with a value between 0 and 1
which when 0 switches the correction off and the scheme behaves as
uncorrectedSnGrad, when set to 1 the full correction is applied and the
scheme behaves as correctedSnGrad and when set to 0.5 the limiter is
calculated such that the non-orthogonal contribution does not exceed the
orthogonal part.
\*---------------------------------------------------------------------------*/
#include <finiteVolume/fv.H>
#include "limitedSnGrad.H"
#include <finiteVolume/volFields.H>
#include <finiteVolume/surfaceFields.H>
#include <finiteVolume/correctedSnGrad.H>
#include <finiteVolume/localMax.H>
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace fv
{
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
template<class Type>
limitedSnGrad<Type>::~limitedSnGrad()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
template<class Type>
tmp<GeometricField<Type, fvsPatchField, surfaceMesh> >
limitedSnGrad<Type>::correction
(
const GeometricField<Type, fvPatchField, volMesh>& vf
) const
{
GeometricField<Type, fvsPatchField, surfaceMesh> corr =
correctedSnGrad<Type>(this->mesh()).correction(vf);
surfaceScalarField limiter
(
min
(
limitCoeff_
*mag(snGradScheme<Type>::snGrad(vf, deltaCoeffs(vf), "orthSnGrad"))
/(
(1 - limitCoeff_)*mag(corr)
+ dimensionedScalar("small", corr.dimensions(), SMALL)
),
dimensionedScalar("one", dimless, 1.0)
)
);
if (fv::debug)
{
Info<< "limitedSnGrad :: limiter min: " << min(limiter.internalField())
<< " max: "<< max(limiter.internalField())
<< " avg: " << average(limiter.internalField()) << endl;
}
return limiter*corr;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace fv
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// ************************ vim: set sw=4 sts=4 et: ************************ //
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