couplingmanager1d3d_line.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-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder
// SPDX-License-Identifier: GPL-3.0-or-later
//
#ifndef DUMUX_MULTIDOMAIN_EMBEDDED_COUPLINGMANAGER_1D3D_LINE_HH
#define DUMUX_MULTIDOMAIN_EMBEDDED_COUPLINGMANAGER_1D3D_LINE_HH
 
#include <vector>
 
#include <dumux/common/tag.hh>
#include <dumux/common/properties.hh>
#include <dumux/common/indextraits.hh>
 
#include <dumux/multidomain/embedded/couplingmanagerbase.hh>
 
namespace Dumux {
 
namespace Embedded1d3dCouplingMode {
struct Line : public Utility::Tag<Line> {
    static std::string name() { return "line"; }
};
 
inline constexpr Line line{};
} // end namespace Embedded1d3dCouplingMode
 
// forward declaration
template<class MDTraits, class CouplingMode>
class Embedded1d3dCouplingManager;
 
template<class MDTraits>
class Embedded1d3dCouplingManager<MDTraits, Embedded1d3dCouplingMode::Line>
: public EmbeddedCouplingManagerBase<MDTraits, Embedded1d3dCouplingManager<MDTraits, Embedded1d3dCouplingMode::Line>>
{
    using ThisType = Embedded1d3dCouplingManager<MDTraits, Embedded1d3dCouplingMode::Line>;
    using ParentType = EmbeddedCouplingManagerBase<MDTraits, ThisType>;
 
    using Scalar = typename MDTraits::Scalar;
    using SolutionVector = typename MDTraits::SolutionVector;
 
    static constexpr auto bulkIdx = typename MDTraits::template SubDomain<0>::Index();
    static constexpr auto lowDimIdx = typename MDTraits::template SubDomain<1>::Index();
 
    // the sub domain type aliases
    template<std::size_t id> using SubDomainTypeTag = typename MDTraits::template SubDomain<id>::TypeTag;
    template<std::size_t id> using Problem = GetPropType<SubDomainTypeTag<id>, Properties::Problem>;
    template<std::size_t id> using GridGeometry = GetPropType<SubDomainTypeTag<id>, Properties::GridGeometry>;
    template<std::size_t id> using GridView = typename GridGeometry<id>::GridView;
    template<std::size_t id> using Element = typename GridView<id>::template Codim<0>::Entity;
    template<std::size_t id> using GridIndex = typename IndexTraits<GridView<id>>::GridIndex;
 
public:
    static constexpr Embedded1d3dCouplingMode::Line couplingMode{};
 
    using ParentType::ParentType;
 
    void init(std::shared_ptr<Problem<bulkIdx>> bulkProblem,
              std::shared_ptr<Problem<lowDimIdx>> lowDimProblem,
              const SolutionVector& curSol)
    {
        ParentType::init(bulkProblem, lowDimProblem, curSol);
        computeLowDimVolumeFractions();
    }
 
    void computeLowDimVolumeFractions()
    {
        // resize the storage vector
        lowDimVolumeInBulkElement_.resize(this->gridView(bulkIdx).size(0));
        // get references to the grid geometries
        const auto& lowDimGridGeometry = this->problem(lowDimIdx).gridGeometry();
        const auto& bulkGridGeometry = this->problem(bulkIdx).gridGeometry();
 
        // compute the low dim volume fractions
        for (const auto& is : intersections(this->glue()))
        {
            // all inside elements are identical...
            const auto& inside = is.targetEntity(0);
            const auto intersectionGeometry = is.geometry();
            const auto lowDimElementIdx = lowDimGridGeometry.elementMapper().index(inside);
 
            // compute the volume the low-dim domain occupies in the bulk domain if it were full-dimensional
            const auto radius = this->problem(lowDimIdx).spatialParams().radius(lowDimElementIdx);
            for (int outsideIdx = 0; outsideIdx < is.numDomainNeighbors(); ++outsideIdx)
            {
                const auto& outside = is.domainEntity(outsideIdx);
                const auto bulkElementIdx = bulkGridGeometry.elementMapper().index(outside);
                lowDimVolumeInBulkElement_[bulkElementIdx] += intersectionGeometry.volume()*M_PI*radius*radius;
            }
        }
    }
 
    // \{
 
    Scalar radius(std::size_t id) const
    {
        const auto& data = this->pointSourceData()[id];
        return this->problem(lowDimIdx).spatialParams().radius(data.lowDimElementIdx());
    }
 
    // For one-dimensional low dim domain we assume radial tubes
    Scalar lowDimVolume(const Element<bulkIdx>& element) const
    {
        const auto eIdx = this->problem(bulkIdx).gridGeometry().elementMapper().index(element);
        return lowDimVolumeInBulkElement_[eIdx];
    }
 
    // For one-dimensional low dim domain we assume radial tubes
    Scalar lowDimVolumeFraction(const Element<bulkIdx>& element) const
    {
        const auto totalVolume = element.geometry().volume();
        return lowDimVolume(element) / totalVolume;
    }
 
    // \}
 
private:
    std::vector<Scalar> lowDimVolumeInBulkElement_;
};
 
template<class MDTraits>
struct CouplingManagerSupportsMultithreadedAssembly<Embedded1d3dCouplingManager<MDTraits, Embedded1d3dCouplingMode::Line>>
: public std::true_type {};
 
} // end namespace Dumux
 
#endif