vanAlbada.H

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/*---------------------------------------------------------------------------*\
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Class
    Foam::vanAlbadaLimiter

Description
    Class with limiter function which returns the limiter for the
    vanAlbada differencing scheme based on r obtained from the LimiterFunc
    class.

    Used in conjunction with the template class LimitedScheme.

SourceFiles
    vanAlbada.C

\*---------------------------------------------------------------------------*/

#ifndef vanAlbada_H
#define vanAlbada_H

#include "vector.H"

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namespace Foam
{

/*---------------------------------------------------------------------------*\
                           Class vanAlbadaLimiter Declaration
\*---------------------------------------------------------------------------*/

template<class LimiterFunc>
class vanAlbadaLimiter
:
    public LimiterFunc
{

public:

    vanAlbadaLimiter(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 r = LimiterFunc::r
        (
            faceFlux, phiP, phiN, gradcP, gradcN, d
        );

        return r*(r + 1)/(sqr(r) + 1);
    }
};


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} // End namespace Foam

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#endif

// ************************************************************************* //