couplingmanager_base.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_BOUNDARY_FREEFLOW_POROUSMEDIUM_COUPLINGMANAGER_BASE_HH
#define DUMUX_MULTIDOMAIN_BOUNDARY_FREEFLOW_POROUSMEDIUM_COUPLINGMANAGER_BASE_HH
 
#include <utility>
#include <memory>
 
#include <dune/common/indices.hh>
#include <dumux/common/properties.hh>
#include <dumux/multidomain/boundary/freeflowporousmedium/ffmasspm/couplingmanager.hh>
#include <dumux/multidomain/boundary/freeflowporousmedium/ffmomentumpm/couplingmanager.hh>
#include <dumux/multidomain/freeflow/couplingmanager.hh>
#include <dumux/multidomain/multibinarycouplingmanager.hh>
 
namespace Dumux {
 
#ifndef DOXYGEN
namespace FreeFlowPorousMediumDetail {
 
// global subdomain indices
static constexpr auto freeFlowMomentumIndex = Dune::index_constant<0>();
static constexpr auto freeFlowMassIndex = Dune::index_constant<1>();
static constexpr auto porousMediumIndex = Dune::index_constant<2>();
 
// coupling indices
static constexpr auto freeFlowMassToFreeFlowMomentumIndex = Dune::index_constant<0>();
static constexpr auto freeFlowMomentumToPorousMediumIndex = Dune::index_constant<1>();
static constexpr auto freeFlowMassToPorousMediumIndex = Dune::index_constant<2>();
static constexpr auto noCouplingIdx = Dune::index_constant<99>();
 
constexpr auto makeCouplingManagerMap()
{
    auto map = std::array<std::array<std::size_t, 3>, 3>{};
 
    // free flow (momentum-mass)
    map[freeFlowMomentumIndex][freeFlowMassIndex] = freeFlowMassToFreeFlowMomentumIndex;
    map[freeFlowMassIndex][freeFlowMomentumIndex] = freeFlowMassToFreeFlowMomentumIndex;
 
    // free flow momentum - porous medium
    map[freeFlowMomentumIndex][porousMediumIndex] = freeFlowMomentumToPorousMediumIndex;
    map[porousMediumIndex][freeFlowMomentumIndex] = freeFlowMomentumToPorousMediumIndex;
 
    // free flow mass - porous medium
    map[freeFlowMassIndex][porousMediumIndex] = freeFlowMassToPorousMediumIndex;
    map[porousMediumIndex][freeFlowMassIndex] = freeFlowMassToPorousMediumIndex;
 
    return map;
}
 
template<std::size_t i>
constexpr auto coupledDomains(Dune::index_constant<i> domainI)
{
    if constexpr (i == freeFlowMomentumIndex)
        return std::make_tuple(freeFlowMassIndex, porousMediumIndex);
    else if constexpr (i == freeFlowMassIndex)
        return std::make_tuple(freeFlowMomentumIndex, porousMediumIndex);
    else // i == porousMediumIndex
        return std::make_tuple(freeFlowMomentumIndex, freeFlowMassIndex);
}
 
template<std::size_t i, std::size_t j>
constexpr auto globalToLocalDomainIndices(Dune::index_constant<i>, Dune::index_constant<j>)
{
    static_assert(i <= 2 && j <= 2);
    static_assert(i != j);
 
    if constexpr (i < j)
        return std::pair<Dune::index_constant<0>, Dune::index_constant<1>>{};
    else
        return std::pair<Dune::index_constant<1>, Dune::index_constant<0>>{};
}
 
struct CouplingMaps
{
    static constexpr auto managerMap()
    {
        return  FreeFlowPorousMediumDetail::makeCouplingManagerMap();
    }
 
    template<std::size_t i, std::size_t j>
    static constexpr auto globalToLocal(Dune::index_constant<i> domainI, Dune::index_constant<j> domainJ)
    {
        return FreeFlowPorousMediumDetail::globalToLocalDomainIndices(domainI, domainJ);
    }
 
    template<std::size_t i>
    static constexpr auto coupledDomains(Dune::index_constant<i> domainI)
    {
        return FreeFlowPorousMediumDetail::coupledDomains(domainI);
    }
};
 
template<class MDTraits>
struct CouplingManagers
{
    template<std::size_t id>
    using SubDomainTypeTag = typename MDTraits::template SubDomain<id>::TypeTag;
 
    using FreeFlowTraits = MultiDomainTraits<
        SubDomainTypeTag<freeFlowMomentumIndex>, SubDomainTypeTag<freeFlowMassIndex>
    >;
 
    using FreeFlowMomentumPorousMediumTraits = MultiDomainTraits<
        SubDomainTypeTag<freeFlowMomentumIndex>, SubDomainTypeTag<porousMediumIndex>
    >;
 
    using FreeFlowMassPorousMediumTraits = MultiDomainTraits<
        SubDomainTypeTag<freeFlowMassIndex>, SubDomainTypeTag<porousMediumIndex>
    >;
 
    using FreeFlowCouplingManager
        = Dumux::FreeFlowCouplingManager<FreeFlowTraits>;
    using FreeFlowMomentumPorousMediumCouplingManager
        = Dumux::FreeFlowMomentumPorousMediumCouplingManager<FreeFlowMomentumPorousMediumTraits>;
    using FreeFlowMassPorousMediumCouplingManager
        = Dumux::FreeFlowMassPorousMediumCouplingManager<FreeFlowMassPorousMediumTraits>;
};
 
} // end namespace FreeFlowPorousMediumDetail
#endif // DOXYGEN
 
template<class MDTraits>
class FreeFlowPorousMediumCouplingManagerBase
: public MultiBinaryCouplingManager<
    MDTraits,
    FreeFlowPorousMediumDetail::CouplingMaps,
    typename FreeFlowPorousMediumDetail::CouplingManagers<MDTraits>::FreeFlowCouplingManager,
    typename FreeFlowPorousMediumDetail::CouplingManagers<MDTraits>::FreeFlowMomentumPorousMediumCouplingManager,
    typename FreeFlowPorousMediumDetail::CouplingManagers<MDTraits>::FreeFlowMassPorousMediumCouplingManager
>
{
    using ParentType = MultiBinaryCouplingManager<
        MDTraits,
        FreeFlowPorousMediumDetail::CouplingMaps,
        typename FreeFlowPorousMediumDetail::CouplingManagers<MDTraits>::FreeFlowCouplingManager,
        typename FreeFlowPorousMediumDetail::CouplingManagers<MDTraits>::FreeFlowMomentumPorousMediumCouplingManager,
        typename FreeFlowPorousMediumDetail::CouplingManagers<MDTraits>::FreeFlowMassPorousMediumCouplingManager
    >;
 
    using Scalar = typename MDTraits::Scalar;
 
    // the sub domain type tags
    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 FVElementGeometry = typename GridGeometry<id>::LocalView;
    template<std::size_t id> using SubControlVolumeFace = typename FVElementGeometry<id>::SubControlVolumeFace;
    template<std::size_t id> using SubControlVolume = typename FVElementGeometry<id>::SubControlVolume;
    template<std::size_t id> using ElementVolumeVariables = typename GetPropType<SubDomainTypeTag<id>, Properties::GridVolumeVariables>::LocalView;
    template<std::size_t id> using NumEqVector = typename Problem<id>::Traits::NumEqVector;
 
    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;
    using SolutionVector = typename MDTraits::SolutionVector;
 
    template<std::size_t id>
    using SubSolutionVector
        = std::decay_t<decltype(std::declval<SolutionVector>()[Dune::index_constant<id>()])>;
 
public:
 
    template<std::size_t i, std::size_t j>
    using SubCouplingManager = typename ParentType::template SubCouplingManager<i, j>;
 
    static constexpr auto freeFlowMomentumIndex = FreeFlowPorousMediumDetail::freeFlowMomentumIndex;
    static constexpr auto freeFlowMassIndex = FreeFlowPorousMediumDetail::freeFlowMassIndex;
    static constexpr auto porousMediumIndex = FreeFlowPorousMediumDetail::porousMediumIndex;
 
public:
    using ParentType::ParentType;
 
    template<class GridVarsTuple>
    void init(std::shared_ptr<Problem<freeFlowMomentumIndex>> freeFlowMomentumProblem,
              std::shared_ptr<Problem<freeFlowMassIndex>> freeFlowMassProblem,
              std::shared_ptr<Problem<porousMediumIndex>> porousMediumProblem,
              GridVarsTuple&& gridVarsTuple,
              const SolutionVector& curSol)
    {
        // initialize sub coupling manager that are not stationary or transient problem specific
        this->init_(freeFlowMomentumProblem, freeFlowMassProblem, porousMediumProblem, std::forward<GridVarsTuple>(gridVarsTuple), curSol);
 
        // initialize stationary-specific sub coupling manager for free-flow
        using FFSol = typename SubCouplingManager<freeFlowMomentumIndex, freeFlowMassIndex>::SolutionVectorStorage;
        this->subCouplingManager(freeFlowMomentumIndex, freeFlowMassIndex).init(
            freeFlowMomentumProblem, freeFlowMassProblem,
            std::make_tuple(std::get<freeFlowMomentumIndex>(gridVarsTuple), std::get<freeFlowMassIndex>(gridVarsTuple)),
            FFSol{ std::get<freeFlowMomentumIndex>(this->curSol()), std::get<freeFlowMassIndex>(this->curSol()) }
        );
    }
 
    template<class GridVarsTuple>
    void init(std::shared_ptr<Problem<freeFlowMomentumIndex>> freeFlowMomentumProblem,
              std::shared_ptr<Problem<freeFlowMassIndex>> freeFlowMassProblem,
              std::shared_ptr<Problem<porousMediumIndex>> porousMediumProblem,
              GridVarsTuple&& gridVarsTuple,
              const SolutionVector& curSol,
              const SolutionVector& prevSol)
    {
        // initialize sub coupling manager that are not stationary or transient problem specific
        this->init_(freeFlowMomentumProblem, freeFlowMassProblem, porousMediumProblem, std::forward<GridVarsTuple>(gridVarsTuple), curSol);
 
        using FFSol = typename SubCouplingManager<freeFlowMomentumIndex, freeFlowMassIndex>::SolutionVectorStorage;
        using FFPrevSol = std::tuple<const SubSolutionVector<freeFlowMomentumIndex>*, const SubSolutionVector<freeFlowMassIndex>*>;
        this->subCouplingManager(freeFlowMomentumIndex, freeFlowMassIndex).init(
            freeFlowMomentumProblem, freeFlowMassProblem,
            std::make_tuple(std::get<freeFlowMomentumIndex>(gridVarsTuple), std::get<freeFlowMassIndex>(gridVarsTuple)),
            FFSol{ std::get<freeFlowMomentumIndex>(this->curSol()), std::get<freeFlowMassIndex>(this->curSol()) },
            FFPrevSol{ &prevSol[freeFlowMomentumIndex], &prevSol[freeFlowMassIndex] }
        );
    }
 
    template<std::size_t i>
    const Problem<i>& problem(Dune::index_constant<i> domainI) const
    {
        return this->subApply(domainI, [&](const auto& cm, auto&& ii) -> const auto& {
            return cm.problem(ii);
        });
    }
 
    template<std::size_t i, std::size_t j>
    bool isCoupled(Dune::index_constant<i> domainI,
                   Dune::index_constant<j> domainJ,
                   const SubControlVolumeFace<i>& scvf) const
    {
        return this->subApply(domainI, domainJ, [&](const auto& cm, auto&& ii, auto&& jj){
            return cm.isCoupled(ii, scvf);
        });
    }
 
    template<std::size_t i, std::size_t j>
    bool isCoupled(Dune::index_constant<i> domainI,
                   Dune::index_constant<j> domainJ,
                   const SubControlVolume<i>& scv) const
    {
        return this->subApply(domainI, domainJ, [&](const auto& cm, auto&& ii, auto&& jj){
            return cm.isCoupled(ii, scv);
        });
    }
 
    using ParentType::couplingStencil;
    template<std::size_t j>
    const auto& couplingStencil(Dune::index_constant<freeFlowMomentumIndex> domainI,
                                const Element<freeFlowMomentumIndex>& elementI,
                                const SubControlVolume<freeFlowMomentumIndex>& scvI,
                                Dune::index_constant<j> domainJ) const
    {
        static_assert(freeFlowMomentumIndex != j);
        return this->subApply(domainI, domainJ, [&](const auto& cm, auto&& ii, auto&& jj) -> const auto& {
            return cm.couplingStencil(ii, elementI, scvI, jj);
        });
    }
private:
    /*
    * \brief Initializes sub-coupling managers for stationary and transient problems
    */
    template<class GridVarsTuple>
    void init_(std::shared_ptr<Problem<freeFlowMomentumIndex>> freeFlowMomentumProblem,
              std::shared_ptr<Problem<freeFlowMassIndex>> freeFlowMassProblem,
              std::shared_ptr<Problem<porousMediumIndex>> porousMediumProblem,
              GridVarsTuple&& gridVarsTuple,
              const SolutionVector& curSol)
    {
        this->updateSolution(curSol); // generic coupling manager stores tuple of shared_ptr
 
        // initialize the binary sub coupling managers
        using FFMassPMSol = typename SubCouplingManager<freeFlowMassIndex, porousMediumIndex>::SolutionVectorStorage;
        this->subCouplingManager(freeFlowMassIndex, porousMediumIndex).init(
            freeFlowMassProblem, porousMediumProblem,
            FFMassPMSol{ std::get<freeFlowMassIndex>(this->curSol()), std::get<porousMediumIndex>(this->curSol()) }
        );
 
        using FFMomPMSol = typename SubCouplingManager<freeFlowMomentumIndex, porousMediumIndex>::SolutionVectorStorage;
        this->subCouplingManager(freeFlowMomentumIndex, porousMediumIndex).init(
            freeFlowMomentumProblem, porousMediumProblem,
            FFMomPMSol{ std::get<freeFlowMomentumIndex>(this->curSol()), std::get<porousMediumIndex>(this->curSol()) }
        );
    }
};
 
} // end namespace Dumux
 
#endif