limitedLnGrad.C

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-------------------------------------------------------------------------------
    Copyright (C) 2016-2017 Wikki 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.
 
    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 "fa.H"
#include "limitedLnGrad.H"
#include "areaFields.H"
#include "edgeFields.H"
#include "correctedLnGrad.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace fa
{
 
// * * * * * * * * * * * * * *< * * Destructor  * * * * * * * * * * * * * * * //
 
template<class Type>
limitedLnGrad<Type>::~limitedLnGrad()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class Type>
tmp<GeometricField<Type, faePatchField, edgeMesh>>
limitedLnGrad<Type>::correction
(
    const GeometricField<Type, faPatchField, areaMesh>& vf
) const
{
    const GeometricField<Type, faePatchField, edgeMesh> corr
    (
        correctedLnGrad<Type>(this->mesh()).correction(vf)
    );
 
    const edgeScalarField limiter
    (
        min
        (
            limitCoeff_
           *mag(lnGradScheme<Type>::lnGrad(vf, deltaCoeffs(vf), "orthSnGrad"))
           /(
                (1 - limitCoeff_)*mag(corr)
              + dimensionedScalar("small", corr.dimensions(), SMALL)
            ),
            dimensionedScalar("one", dimless, 1.0)
        )
    );
 
    if (fa::debug)
    {
        Info<< "limitedLnGrad :: limiter min: " << min(limiter.internalField())
            << " max: "<< max(limiter.internalField())
            << " avg: " << average(limiter.internalField()) << endl;
    }
 
    return limiter*corr;
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace fv
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// ************************************************************************* //