fv.hh

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#ifndef DUMUX_FV_SPATIAL_PARAMS_HH
#define DUMUX_FV_SPATIAL_PARAMS_HH
 
#include <dune/common/exceptions.hh>
#include <dumux/common/typetraits/isvalid.hh>
#include "fv1p.hh"
 
namespace Dumux {
 
#ifndef DOXYGEN
namespace Detail {
// helper struct detecting if the user-defined spatial params class has a materialLawParamsAtPos function
// for g++ > 5.3, this can be replaced by a lambda
template<class GlobalPosition>
struct hasMaterialLawParamsAtPos
{
    template<class SpatialParams>
    auto operator()(const SpatialParams& a)
    -> decltype(a.materialLawParamsAtPos(std::declval<GlobalPosition>()))
    {}
};
} // end namespace Detail
#endif
 
 
template<class GridGeometry, class Scalar, class Implementation>
class FVSpatialParams : public FVSpatialParamsOneP<GridGeometry, Scalar, Implementation>
{
    using ParentType = FVSpatialParamsOneP<GridGeometry, Scalar, Implementation>;
    using GridView = typename GridGeometry::GridView;
    using FVElementGeometry = typename GridGeometry::LocalView;
    using SubControlVolume = typename GridGeometry::SubControlVolume;
    using Element = typename GridView::template Codim<0>::Entity;
 
    using GlobalPosition = typename Element::Geometry::GlobalCoordinate;
 
public:
    FVSpatialParams(std::shared_ptr<const GridGeometry> gridGeometry)
    : ParentType(gridGeometry)
    {}
 
    template<class ElementSolution>
    decltype(auto) materialLawParams(const Element& element,
                                     const SubControlVolume& scv,
                                     const ElementSolution& elemSol) const
    {
        static_assert(decltype(isValid(Detail::hasMaterialLawParamsAtPos<GlobalPosition>())(this->asImp_()))::value," \n\n"
        "   Your spatial params class has to either implement\n\n"
        "         const MaterialLawParams& materialLawParamsAtPos(const GlobalPosition& globalPos) const\n\n"
        "   or overload this function\n\n"
        "         template<class ElementSolution>\n"
        "         const MaterialLawParams& materialLawParams(const Element& element,\n"
        "                                                    const SubControlVolume& scv,\n"
        "                                                    const ElementSolution& elemSol) const\n\n");
 
        return this->asImp_().materialLawParamsAtPos(scv.center());
    }
 
    template<class FluidSystem, class ElementSolution>
    int wettingPhase(const Element& element,
                     const SubControlVolume& scv,
                     const ElementSolution& elemSol) const
    {
        return this->asImp_().template wettingPhaseAtPos<FluidSystem>(scv.center());
    }
 
    template<class FluidSystem>
    int wettingPhaseAtPos(const GlobalPosition& globalPos) const
    {
        DUNE_THROW(Dune::InvalidStateException,
                   "The spatial parameters do not provide "
                   "a wettingPhaseAtPos() method.");
    }
};
 
} // namespace Dumux
 
#endif