awnsurfaceexpswpcto3.hh

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#ifndef AWN_SURFACE_EXP_SW_PC_TO_3
#define AWN_SURFACE_EXP_SW_PC_TO_3
 
#include "awnsurfaceexpswpcto3params.hh"
 
#include <dune/common/exceptions.hh>
 
#include <algorithm>
#include <cmath>
#include <assert.h>
 
namespace Dumux {
 
template <class ScalarT, class ParamsT =AwnSurfaceExpSwPcTo3Params<ScalarT> >
class AwnSurfaceExpSwPcTo3
{
public:
    using Params = ParamsT;
    using Scalar = typename Params::Scalar;
 
    static Scalar interfacialArea(const Params & params, const Scalar Sw, const Scalar pc)
    {
        // TODO think about awn surface for relative saturation
        const Scalar a1 = params.a1();
        const Scalar a2 = params.a2();
        const Scalar a3 = params.a3();
 
        using std::exp;
        const Scalar aAlphaBeta = a1 * exp( a2 * Sw) + a3 * pc * pc * pc ;
        return aAlphaBeta;
    }
 
    static Scalar dawn_dpc (const Params &params, const Scalar Sw, const Scalar pc)
    {
        DUNE_THROW(Dune::NotImplemented, __FILE__ << "  dawndpc()");
    }
 
    static Scalar dawn_dsw (const Params &params, const Scalar Sw, const Scalar pc)
    {
        DUNE_THROW(Dune::NotImplemented, __FILE__ << "  dawndSw()");
    }
 
};
} // end namespace Dumux
 
#endif