/usr/include/freefoam/finiteVolume/QUICK.H 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/>.
Class
Foam::QUICKLimiter
Description
Class with limiter function which returns the limiter for the
quadratic-upwind differencing scheme.
Note that the weighting factors are not bounded between upwind and
central-differencing, some downwind contribution is possible although
the interpolate is limited to be between the upwind and downwind cell
values.
Used in conjunction with the template class LimitedScheme.
SourceFiles
QUICK.C
\*---------------------------------------------------------------------------*/
#ifndef QUICK_H
#define QUICK_H
#include <OpenFOAM/vector.H>
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class QUICKLimiter Declaration
\*---------------------------------------------------------------------------*/
template<class LimiterFunc>
class QUICKLimiter
:
public LimiterFunc
{
public:
QUICKLimiter(Istream&)
{}
scalar limiter
(
const scalar cdWeight,
const scalar faceFlux,
const typename LimiterFunc::phiType& phiP,
const typename LimiterFunc::phiType& phiN,
const typename LimiterFunc::gradPhiType& gradcP,
const typename LimiterFunc::gradPhiType& gradcN,
const vector& d
) const
{
scalar phiCD = cdWeight*phiP + (1 - cdWeight)*phiN;
scalar phiU, phif;
if (faceFlux > 0)
{
phiU = phiP;
phif = 0.5*(phiCD + phiP + (1 - cdWeight)*(d & gradcP));
}
else
{
phiU = phiN;
phif = 0.5*(phiCD + phiN - cdWeight*(d & gradcN));
}
// Calculate the effective limiter for the QUICK interpolation
scalar QLimiter = (phif - phiU)/stabilise(phiCD - phiU, SMALL);
// Limit the limiter between upwind and downwind
return max(min(QLimiter, 2), 0);
}
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************ vim: set sw=4 sts=4 et: ************************ //
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