freeflow/shallowwater/volumevariables.hh

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#ifndef DUMUX_FREEFLOW_SHALLOW_WATER_VOLUME_VARIABLES_HH
#define DUMUX_FREEFLOW_SHALLOW_WATER_VOLUME_VARIABLES_HH
 
namespace Dumux {
 
template <class Traits>
class ShallowWaterVolumeVariables
{
    using Indices =  typename Traits::ModelTraits::Indices;
    using Scalar = typename Traits::PrimaryVariables::value_type;
 
public:
    using PrimaryVariables = typename Traits::PrimaryVariables;
    using FluidSystem = typename Traits::FluidSystem;
 
    template<class ElemSol, class Problem, class Element, class Scv>
    void update(const ElemSol &elemSol,
                const Problem &problem,
                const Element &element,
                const Scv &scv)
    {
 
        priVars_ = elemSol[scv.localDofIndex()];
        bedSurface_ = problem.spatialParams().bedSurface(element,scv);
    }
 
    Scalar extrusionFactor() const
    { return 1.0; }
 
    const PrimaryVariables& priVars() const
    { return priVars_; }
 
    Scalar waterDepth() const
    {
        return priVars_[Indices::waterdepthIdx];
    }
 
    Scalar velocity(int directionIndex) const
    {
 
        return priVars_[Indices::velocityOffset + directionIndex];
    }
 
    Scalar bedSurface() const
    {
        return bedSurface_;
    }
 
    Scalar density(int phaseIdx = 0) const
    {
        static_assert(!FluidSystem::isCompressible(0),
            "The shallow water model assumes incompressible fluids"
        );
 
        // call with hard-coded sensible default values for water/river applications for now
        return FluidSystem::density(283.15, 1e5);
 
    }
 
private:
    PrimaryVariables priVars_;
    Scalar bedSurface_;
};
 
} // end namespace Dumux
 
#endif