mpadapter.hh

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#ifndef DUMUX_MP_ADAPTER_HH
#define DUMUX_MP_ADAPTER_HH
 
#include <dune/common/fvector.hh>
#include <dumux/common/typetraits/typetraits.hh>
#include <dumux/material/fluidmatrixinteractions/fluidmatrixinteraction.hh>
 
namespace Dumux::FluidMatrix {
 
template <class MaterialLaw, int numFluidPhases = std::decay_t<MaterialLaw>::numFluidPhases()>
class MPAdapter
{
    static_assert(AlwaysFalse<MaterialLaw>::value, "Adapter not implemented for the specified number of phases");
};
 
 
template<class MaterialLaw>
class MPAdapter<MaterialLaw, 2>
: public Adapter<MPAdapter<MaterialLaw, 2>, MultiPhasePcKrSw>
{
public:
    using Scalar = typename std::decay_t<MaterialLaw>::Scalar;
 
    MPAdapter(MaterialLaw&& pcKrS)
    : pcKrS_(std::forward<MaterialLaw>(pcKrS))
    {}
 
    template <class FluidState>
    auto capillaryPressures(const FluidState& state, int wPhaseIdx) const
    {
        Dune::FieldVector<typename FluidState::Scalar, 2> values;
 
        const int nPhaseIdx = 1 - wPhaseIdx;
        // non-wetting phase gets the capillary pressure added
        values[nPhaseIdx] = 0;
        // wetting phase does not get anything added
        values[wPhaseIdx] = - pcKrS_.pc(state.saturation(wPhaseIdx));
 
        return values;
    }
 
    template <class FluidState>
    auto relativePermeabilities(const FluidState& state, int wPhaseIdx) const
    {
        Dune::FieldVector<typename FluidState::Scalar, 2> values;
 
        const int nPhaseIdx = 1 - wPhaseIdx;
        values[wPhaseIdx] = pcKrS_.krw(state.saturation(wPhaseIdx));
        values[nPhaseIdx] = pcKrS_.krn(state.saturation(wPhaseIdx));
 
        return values;
    }
private:
    MaterialLaw pcKrS_;
};
 
template<typename T>
MPAdapter(T&&) -> MPAdapter<T>;
 
} // end namespace Dumux::FluidMatrix
 
 
#endif