porousmediumflow/1p/implicit/network1d3d/spatialparams.hh

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#ifndef DUMUX_ONEP_TUBES_TEST_SPATIALPARAMS_HH
#define DUMUX_ONEP_TUBES_TEST_SPATIALPARAMS_HH
 
#include <dumux/porousmediumflow/properties.hh>
#include <dumux/material/spatialparams/fv1p.hh>
 
namespace Dumux {
 
template<class GridGeometry, class Scalar>
class TubesTestSpatialParams
: public FVSpatialParamsOneP<GridGeometry, Scalar,
                             TubesTestSpatialParams<GridGeometry, Scalar>>
{
    using FVElementGeometry = typename GridGeometry::LocalView;
    using SubControlVolume = typename FVElementGeometry::SubControlVolume;
    using GridView = typename GridGeometry::GridView;
    using Element = typename GridView::template Codim<0>::Entity;
    using ParentType = FVSpatialParamsOneP<GridGeometry, Scalar,
                                           TubesTestSpatialParams<GridGeometry, Scalar>>;
 
    using GlobalPosition = typename Element::Geometry::GlobalCoordinate;
 
public:
    // export permeability type
    using PermeabilityType = Scalar;
 
    TubesTestSpatialParams(std::shared_ptr<const GridGeometry> gridGeometry)
        : ParentType(gridGeometry)
    {
        radius_ = 1.0;
 
        using std::sqrt;
        radiusMain_ = sqrt(sqrt(4.0/sqrt(3.0)));
    }
 
    Scalar radius(const SubControlVolume &scv) const
    {
        if(scv.center()[2] > 0.5 - eps_)
            return radiusMain_;
        else
            return radius_;
    }
 
    template<class ElementSolution>
    PermeabilityType permeability(const Element& element,
                                  const SubControlVolume& scv,
                                  const ElementSolution& elemSol) const
    {
        const Scalar radius = this->radius(scv);
        const Scalar gamma = 2; // quadratic velocity profile (Poiseuille flow)
        return radius*radius/(2*(2+gamma));
    }
 
    Scalar porosityAtPos(const GlobalPosition& globalPos) const
    { return 1; }
 
private:
    Scalar radius_, radiusMain_;
    static constexpr Scalar eps_ = 1e-8;
};
 
} // end namespace Dumux
 
#endif