porousmediumflow/boxdfm/subcontrolvolumeface.hh

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// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
// vi: set et ts=4 sw=4 sts=4:
//
// SPDX-FileCopyrightText: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
// SPDX-License-Identifier: GPL-3.0-or-later
//
#ifndef DUMUX_POROUSMEDIUMFLOW_BOXDFM_SUBCONTROLVOLUMEFACE_HH
#define DUMUX_POROUSMEDIUMFLOW_BOXDFM_SUBCONTROLVOLUMEFACE_HH
 
#include <utility>
 
#include <dune/geometry/type.hh>
#include <dune/geometry/multilineargeometry.hh>
 
#include <dumux/common/boundaryflag.hh>
#include <dumux/porousmediumflow/boxdfm/geometryhelper.hh>
#include <dumux/geometry/volume.hh>
 
namespace Dumux {
 
template<class GridView>
struct BoxDfmDefaultScvfGeometryTraits
{
    using Grid = typename GridView::Grid;
    static constexpr int dim = Grid::dimension;
    static constexpr int dimWorld = Grid::dimensionworld;
    using GridIndexType = typename Grid::LeafGridView::IndexSet::IndexType;
    using LocalIndexType = unsigned int;
    using Scalar = typename Grid::ctype;
    using GeometryTraits = BoxDfmMLGeometryTraits<Scalar>;
    using Geometry = Dune::MultiLinearGeometry<Scalar, dim-1, dimWorld, GeometryTraits>;
    using CornerStorage = typename GeometryTraits::template CornerStorage<dim-1, dimWorld>::Type;
    using GlobalPosition = typename CornerStorage::value_type;
    using BoundaryFlag = Dumux::BoundaryFlag<Grid>;
};
 
template<class GV,
         class T = BoxDfmDefaultScvfGeometryTraits<GV> >
class BoxDfmSubControlVolumeFace
{
    using ThisType = BoxDfmSubControlVolumeFace<GV, T>;
    using GridIndexType = typename T::GridIndexType;
    using LocalIndexType = typename T::LocalIndexType;
    using Scalar = typename T::Scalar;
    using Geometry = typename T::Geometry;
    using BoundaryFlag = typename T::BoundaryFlag;
 
    static_assert(T::dim == 2 || T::dim == 3, "Box-Dfm sub-control volume face only implemented in 2d or 3d");
 
public:
    using GlobalPosition = typename T::GlobalPosition;
    using Traits = T;
 
    BoxDfmSubControlVolumeFace() = default;
 
    template<class GeometryHelper, class Element>
    BoxDfmSubControlVolumeFace(const GeometryHelper& geometryHelper,
                               const Element& element,
                               GridIndexType scvfIndex,
                               std::array<LocalIndexType, 2>&& scvIndices)
    : center_(0.0)
    , scvfIndex_(scvfIndex)
    , scvIndices_(std::move(scvIndices))
    , boundary_(false)
    , isFractureScvf_(false)
    , boundaryFlag_{}
    , facetIdx_(0)
    , indexInIntersection_(0)
    {
        const auto corners = geometryHelper.getScvfCorners(scvfIndex);
        unitOuterNormal_ = geometryHelper.normal(corners, scvIndices_);
        area_ = Dumux::convexPolytopeVolume<T::dim-1>(
                    Dune::GeometryTypes::cube(T::dim-1),
                    [&](unsigned int i){ return corners[i]; });
 
        for (const auto& corner : corners)
            center_ += corner;
        center_ /= corners.size();
    }
 
    template<class GeometryHelper, class Intersection>
    BoxDfmSubControlVolumeFace(const GeometryHelper& geometryHelper,
                               const Intersection& intersection,
                               LocalIndexType indexInIntersection,
                               GridIndexType scvfIndex,
                               std::array<LocalIndexType, 2>&& scvIndices)
    : center_(0.0)
    , unitOuterNormal_(intersection.centerUnitOuterNormal())
    , scvfIndex_(scvfIndex)
    , scvIndices_(std::move(scvIndices))
    , boundary_(true)
    , isFractureScvf_(false)
    , boundaryFlag_{intersection}
    , facetIdx_(0)
    , indexInIntersection_(0)
    {
        const auto corners = geometryHelper.getBoundaryScvfCorners(intersection.indexInInside(), indexInIntersection);
        area_ = Dumux::convexPolytopeVolume<T::dim-1>(
                    Dune::GeometryTypes::cube(T::dim-1),
                    [&](unsigned int i){ return corners[i]; });
        for (const auto& corner : corners)
            center_ += corner;
        center_ /= corners.size();
    }
 
    template<class GeometryHelper, class Intersection>
    BoxDfmSubControlVolumeFace(const GeometryHelper& geometryHelper,
                               const Intersection& intersection,
                               LocalIndexType indexInIntersection,
                               GridIndexType scvfIndex,
                               std::array<LocalIndexType, 2>&& scvIndices,
                               bool boundary)
    : center_(0.0)
    , scvfIndex_(scvfIndex)
    , scvIndices_(std::move(scvIndices))
    , boundary_(boundary)
    , isFractureScvf_(true)
    , boundaryFlag_{intersection}
    , facetIdx_(intersection.indexInInside())
    , indexInIntersection_(indexInIntersection)
    {
        const auto corners = geometryHelper.getFractureScvfCorners(intersection.indexInInside(), indexInIntersection);
        // The area here is given in meters. In order to
        // get the right dimensions, the user has to provide
        // the appropriate aperture in the problem (via an extrusion factor)
        if (T::dim == 3)
            area_ = (corners[1]-corners[0]).two_norm();
        else if (T::dim == 2)
            area_ = 1.0;
 
        // obtain the unit normal vector
        unitOuterNormal_ = geometryHelper.fractureNormal(corners, intersection, indexInIntersection);
 
        // compute the scvf center
        for (const auto& corner : corners)
            center_ += corner;
        center_ /= corners.size();
    }
 
    const GlobalPosition& center() const
    { return center_; }
 
    const GlobalPosition& ipGlobal() const
    { return center_; }
 
    Scalar area() const
    { return area_; }
 
    bool boundary() const
    { return boundary_; }
 
    const GlobalPosition& unitOuterNormal() const
    { return unitOuterNormal_; }
 
    GridIndexType index() const
    { return scvfIndex_; }
 
    bool isOnFracture() const
    { return isFractureScvf_; }
 
    LocalIndexType facetIndexInElement() const
    { assert(isFractureScvf_); return facetIdx_; }
 
    LocalIndexType indexInIntersection() const
    { assert(isFractureScvf_); return indexInIntersection_; }
 
    typename BoundaryFlag::value_type boundaryFlag() const
    { return boundaryFlag_.get(); }
 
    LocalIndexType insideScvIdx() const
    { return scvIndices_[0]; }
 
    // Results in undefined behaviour if i >= numOutsideScvs()
    LocalIndexType outsideScvIdx(int i = 0) const
    {
        assert(!boundary());
        return scvIndices_[1];
    }
 
    std::size_t numOutsideScvs() const
    {
        return static_cast<std::size_t>(!boundary());
    }
 
private:
    GlobalPosition center_;
    GlobalPosition unitOuterNormal_;
    Scalar area_;
    GridIndexType scvfIndex_;
    std::array<LocalIndexType, 2> scvIndices_;
    bool boundary_;
    bool isFractureScvf_;
    BoundaryFlag boundaryFlag_;
    LocalIndexType facetIdx_;
    LocalIndexType indexInIntersection_;
};
 
} // end namespace Dumux
 
#endif