limitedSnGrad.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011-2012 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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    You should have received a copy of the GNU General Public License
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\*---------------------------------------------------------------------------*/
 
#include "fv.H"
#include "limitedSnGrad.H"
#include "volFields.H"
#include "surfaceFields.H"
#include "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
{
    const GeometricField<Type, fvsPatchField, surfaceMesh> corr
    (
        correctedScheme_().correction(vf)
    );
 
    const surfaceScalarField limiter
    (
        min
        (
            limitCoeff_
           *mag(snGradScheme<Type>::snGrad(vf, deltaCoeffs(vf), "SndGrad"))
           /(
                (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
 
// ************************************************************************* //