/usr/include/freefoam/finiteVolume/Phi.H is in libfreefoam-dev 0.1.0+dfsg-1build1.
This file is owned by root:root, with mode 0o644.
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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::PhiLimiter
Description
Class with limiter function which returns the limiter for the
Phi differencing scheme.
Used in conjunction with the template class PhiScheme.
SourceFiles
Phi.C
\*---------------------------------------------------------------------------*/
#ifndef Phi_H
#define Phi_H
#include <OpenFOAM/vector.H>
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
/*---------------------------------------------------------------------------*\
Class PhiLimiter Declaration
\*---------------------------------------------------------------------------*/
class PhiLimiter
{
scalar k_;
public:
PhiLimiter(Istream& is)
:
k_(readScalar(is))
{
if (k_ < 0 || k_ > 1)
{
FatalIOErrorIn("PhiLimiter(Istream& is)", is)
<< "coefficient = " << k_
<< " should be >= 0 and <= 1"
<< exit(FatalIOError);
}
}
scalar limiter
(
const scalar cdWeight,
const scalar faceFlux,
const vector& PhiP,
const vector& PhiN,
const vector& Sf,
const scalar&
) const
{
scalar phiP = Sf&PhiP;
scalar phiN = Sf&PhiN;
scalar phiU;
if (faceFlux > 0)
{
phiU = phiP;
}
else
{
phiU = phiN;
}
scalar phiCD = cdWeight*phiP + (1 - cdWeight)*phiN;
// Calculate the effective limiter for the Phi interpolation
//scalar PLimiter =
// (1.0 - k_) + k_*(faceFlux - phiU)/stabilise(phiCD - phiU, SMALL);
scalar PLimiter =
((faceFlux - phiU)/stabilise(phiCD - phiU, SMALL) + k_);
// Limit the limiter between upwind and central
return max(min(PLimiter, 1), 0);
}
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************ vim: set sw=4 sts=4 et: ************************ //
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