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| 1 | // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- | ||
| 2 | // vi: set et ts=4 sw=4 sts=4: | ||
| 3 | // | ||
| 4 | // SPDX-FileCopyrightInfo: Copyright © DuMux Project contributors, see AUTHORS.md in root folder | ||
| 5 | // SPDX-License-Identifier: GPL-3.0-or-later | ||
| 6 | // | ||
| 7 | /*! | ||
| 8 | * \file | ||
| 9 | * \ingroup Discretization | ||
| 10 | * \brief The flux stencil specialized for different discretization schemes | ||
| 11 | */ | ||
| 12 | #ifndef DUMUX_DISCRETIZATION_FLUXSTENCIL_HH | ||
| 13 | #define DUMUX_DISCRETIZATION_FLUXSTENCIL_HH | ||
| 14 | |||
| 15 | #include <vector> | ||
| 16 | |||
| 17 | #include <dune/common/reservedvector.hh> | ||
| 18 | #include <dumux/common/indextraits.hh> | ||
| 19 | #include <dumux/discretization/method.hh> | ||
| 20 | |||
| 21 | namespace Dumux { | ||
| 22 | |||
| 23 | /*! | ||
| 24 | * \ingroup Discretization | ||
| 25 | * \brief The flux stencil specialized for different discretization schemes | ||
| 26 | * \note There might be different stencils used for e.g. advection and diffusion for schemes | ||
| 27 | * where the stencil depends on variables. Also schemes might even have solution dependent | ||
| 28 | * stencil. However, we always reserve the stencil or all DOFs that are possibly involved | ||
| 29 | * since we use the flux stencil for matrix and assembly. This might lead to some zeros stored | ||
| 30 | * in the matrix. | ||
| 31 | */ | ||
| 32 | template<class FVElementGeometry, class DiscretizationMethod = typename FVElementGeometry::GridGeometry::DiscretizationMethod> | ||
| 33 | class FluxStencil; | ||
| 34 | |||
| 35 | /* | ||
| 36 | * \ingroup Discretization | ||
| 37 | * \brief Flux stencil specialization for the cell-centered tpfa scheme | ||
| 38 | * \tparam FVElementGeometry The local view on the finite volume grid geometry | ||
| 39 | */ | ||
| 40 | template<class FVElementGeometry> | ||
| 41 | class FluxStencil<FVElementGeometry, DiscretizationMethods::CCTpfa> | ||
| 42 | { | ||
| 43 | using GridGeometry = typename FVElementGeometry::GridGeometry; | ||
| 44 | using SubControlVolumeFace = typename GridGeometry::SubControlVolumeFace; | ||
| 45 | using GridView = typename GridGeometry::GridView; | ||
| 46 | using Element = typename GridView::template Codim<0>::Entity; | ||
| 47 | using GridIndexType = typename IndexTraits<GridView>::GridIndex; | ||
| 48 | |||
| 49 | public: | ||
| 50 | //! Each cell I couples to a cell J always only via one face | ||
| 51 | using ScvfStencilIForJ = Dune::ReservedVector<GridIndexType, 1>; | ||
| 52 | |||
| 53 | //! The flux stencil type | ||
| 54 | using Stencil = typename SubControlVolumeFace::Traits::GridIndexStorage; | ||
| 55 | |||
| 56 | //! Returns the flux stencil | ||
| 57 | 10093103 | static Stencil stencil(const Element& element, | |
| 58 | const FVElementGeometry& fvGeometry, | ||
| 59 | const SubControlVolumeFace& scvf) | ||
| 60 | { | ||
| 61 |
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10093103 | if (scvf.boundary()) |
| 62 | 383661 | return Stencil({scvf.insideScvIdx()}); | |
| 63 |
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19804946 | else if (scvf.numOutsideScvs() > 1) |
| 64 | { | ||
| 65 | 5436 | Stencil stencil({scvf.insideScvIdx()}); | |
| 66 |
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8579 | for (unsigned int i = 0; i < scvf.numOutsideScvs(); ++i) |
| 67 |
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7220 | stencil.push_back(scvf.outsideScvIdx(i)); |
| 68 | 2718 | return stencil; | |
| 69 | } | ||
| 70 | else | ||
| 71 | 29781452 | return Stencil({scvf.insideScvIdx(), scvf.outsideScvIdx()}); | |
| 72 | } | ||
| 73 | }; | ||
| 74 | |||
| 75 | /* | ||
| 76 | * \ingroup Discretization | ||
| 77 | * \brief Flux stencil specialization for the cell-centered mpfa scheme | ||
| 78 | * \tparam FVElementGeometry The local view on the finite volume grid geometry | ||
| 79 | */ | ||
| 80 | template<class FVElementGeometry> | ||
| 81 | class FluxStencil<FVElementGeometry, DiscretizationMethods::CCMpfa> | ||
| 82 | { | ||
| 83 | using GridGeometry = typename FVElementGeometry::GridGeometry; | ||
| 84 | using SubControlVolumeFace = typename GridGeometry::SubControlVolumeFace; | ||
| 85 | using GridView = typename GridGeometry::GridView; | ||
| 86 | using Element = typename GridView::template Codim<0>::Entity; | ||
| 87 | using GridIndexType = typename IndexTraits<GridView>::GridIndex; | ||
| 88 | |||
| 89 | // Use the stencil type of the primary interaction volume | ||
| 90 | using NodalIndexSet = typename GridGeometry::GridIVIndexSets::DualGridIndexSet::NodalIndexSet; | ||
| 91 | |||
| 92 | public: | ||
| 93 | //! We don't know yet how many faces couple to a neighboring element | ||
| 94 | using ScvfStencilIForJ = std::vector<GridIndexType>; | ||
| 95 | |||
| 96 | //! The flux stencil type | ||
| 97 | using Stencil = typename NodalIndexSet::NodalGridStencilType; | ||
| 98 | |||
| 99 | //! Returns the indices of the elements required for flux calculation on an scvf. | ||
| 100 | 6144 | static const Stencil& stencil(const Element& element, | |
| 101 | const FVElementGeometry& fvGeometry, | ||
| 102 | const SubControlVolumeFace& scvf) | ||
| 103 | { | ||
| 104 | 630616 | const auto& gridGeometry = fvGeometry.gridGeometry(); | |
| 105 | |||
| 106 | // return the scv (element) indices in the interaction region | ||
| 107 |
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636760 | if (gridGeometry.vertexUsesSecondaryInteractionVolume(scvf.vertexIndex())) |
| 108 | 2496 | return gridGeometry.gridInteractionVolumeIndexSets().secondaryIndexSet(scvf).gridScvIndices(); | |
| 109 | else | ||
| 110 | 1895496 | return gridGeometry.gridInteractionVolumeIndexSets().primaryIndexSet(scvf).gridScvIndices(); | |
| 111 | } | ||
| 112 | }; | ||
| 113 | |||
| 114 | } // end namespace Dumux | ||
| 115 | |||
| 116 | #endif | ||
| 117 |