minmodGradientLimiter.H

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    Copyright (C) 2018 OpenFOAM Foundation
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License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
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    the Free Software Foundation, either version 3 of the License, or
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Class
    Foam::fv::gradientLimiters::minmod
 
Description
    Minmod gradient limiter
 
    This is the default gradient limiter which clips the gradient to remove cell
    to face extrapolation unboundedness.  It corresponds to the original
    cellLimitedGrad implementation before the addition of run-time select-able
    limiter functions.
 
    Example:
    \verbatim
    gradSchemes
    {
        default Gauss linear;
        limited cellLimited Gauss linear 1;
    }
    \endverbatim
 
See also
    Foam::fv::cellLimitedGrad
 
\*---------------------------------------------------------------------------*/
 
#ifndef minmodGradientLimiter_H
#define minmodGradientLimiter_H
 
#include "Istream.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
namespace fv
{
 
namespace gradientLimiters
{
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
class minmod
{
 
public:
 
    // Constructors
 
        minmod(Istream&)
        {}
 
 
    // Member Functions
 
        inline scalar limiter(const scalar r) const
        {
            return min(r, 1);
        }
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace gradientLimiters
 
} // End namespace fv
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //