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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-FileCopyrightText: 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 Pore Scale Simulations | ||
| 10 | * \ingroup Basic Pore Structure | ||
| 11 | * \brief The problem file for the evaluation of a pore geometry | ||
| 12 | */ | ||
| 13 | |||
| 14 | #ifndef DUMUX_PERIODIC_FLOW_PORE_TEST_PROBLEM_HH | ||
| 15 | #define DUMUX_PERIODIC_FLOW_PORE_TEST_PROBLEM_HH | ||
| 16 | |||
| 17 | #include <dumux/common/parameters.hh> | ||
| 18 | #include <dumux/common/properties.hh> | ||
| 19 | |||
| 20 | #include <dumux/freeflow/navierstokes/boundarytypes.hh> | ||
| 21 | |||
| 22 | #include <dumux/freeflow/navierstokes/momentum/fluxhelper.hh> | ||
| 23 | #include <dumux/freeflow/navierstokes/scalarfluxhelper.hh> | ||
| 24 | #include <dumux/freeflow/navierstokes/mass/1p/advectiveflux.hh> | ||
| 25 | |||
| 26 | namespace Dumux { | ||
| 27 | |||
| 28 | template <class TypeTag, class BaseProblem> | ||
| 29 | 2 | class FlowPoreStructureProblem : public BaseProblem | |
| 30 | { | ||
| 31 | using ParentType = BaseProblem; | ||
| 32 | using BoundaryTypes = typename ParentType::BoundaryTypes; | ||
| 33 | using GridGeometry = GetPropType<TypeTag, Properties::GridGeometry>; | ||
| 34 | using FVElementGeometry = typename GridGeometry::LocalView; | ||
| 35 | using SubControlVolume = typename FVElementGeometry::SubControlVolume; | ||
| 36 | using SubControlVolumeFace = typename FVElementGeometry::SubControlVolumeFace; | ||
| 37 | using Indices = typename GetPropType<TypeTag, Properties::ModelTraits>::Indices; | ||
| 38 | using ModelTraits = GetPropType<TypeTag, Properties::ModelTraits>; | ||
| 39 | using InitialValues = typename ParentType::InitialValues; | ||
| 40 | using Sources = typename ParentType::Sources; | ||
| 41 | using DirichletValues = typename ParentType::DirichletValues; | ||
| 42 | using BoundaryFluxes = typename ParentType::BoundaryFluxes; | ||
| 43 | using Scalar = GetPropType<TypeTag, Properties::Scalar>; | ||
| 44 | |||
| 45 | static constexpr auto dimWorld = GridGeometry::GridView::dimensionworld; | ||
| 46 | using Element = typename FVElementGeometry::Element; | ||
| 47 | using GlobalPosition = typename Element::Geometry::GlobalCoordinate; | ||
| 48 | using VelocityVector = Dune::FieldVector<Scalar, dimWorld>; | ||
| 49 | |||
| 50 | using CouplingManager = GetPropType<TypeTag, Properties::CouplingManager>; | ||
| 51 | |||
| 52 | public: | ||
| 53 | 4 | FlowPoreStructureProblem(std::shared_ptr<const GridGeometry> gridGeometry, | |
| 54 | std::shared_ptr<CouplingManager> couplingManager) | ||
| 55 | : ParentType(gridGeometry, couplingManager) | ||
| 56 |
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16 | , eps_(1e-6) |
| 57 | { | ||
| 58 |
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4 | momentumForce_ = getParam<Scalar>("Problem.MomentumForce"); |
| 59 | 4 | referencePressure_ = 0.0; | |
| 60 |
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4 | problemName_ = "test_ff_periodic_subgrid"; |
| 61 | 4 | } | |
| 62 | |||
| 63 | /*! | ||
| 64 | * \brief The problem name. | ||
| 65 | */ | ||
| 66 | 1 | const std::string& name() const | |
| 67 |
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1 | { return problemName_ ; } |
| 68 | |||
| 69 | /*! | ||
| 70 | * \brief Specifies which kind of boundary condition should be | ||
| 71 | * used for which equation on a given boundary control volume. | ||
| 72 | * | ||
| 73 | * \param globalPos The position of the center of the finite volume | ||
| 74 | */ | ||
| 75 |
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119952 | BoundaryTypes boundaryTypesAtPos(const GlobalPosition &globalPos) const |
| 76 | { | ||
| 77 |
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245160 | BoundaryTypes values; |
| 78 | |||
| 79 | if constexpr (ParentType::isMomentumProblem()) | ||
| 80 | 125208 | values.setAllDirichlet(); | |
| 81 | else | ||
| 82 | values.setAllNeumann(); | ||
| 83 | |||
| 84 | 125208 | return values; | |
| 85 | } | ||
| 86 | |||
| 87 | //! Enable internal Dirichlet constraints | ||
| 88 | static constexpr bool enableInternalDirichletConstraints() | ||
| 89 | { return !ParentType::isMomentumProblem(); } | ||
| 90 | |||
| 91 | |||
| 92 | /*! | ||
| 93 | * \brief Tag a degree of freedom to carry internal Dirichlet constraints. | ||
| 94 | * If true is returned for a dof, the equation for this dof is replaced | ||
| 95 | * by the constraint that its primary variable values must match the | ||
| 96 | * user-defined values obtained from the function internalDirichlet(), | ||
| 97 | * which must be defined in the problem. | ||
| 98 | * | ||
| 99 | * \param element The finite element | ||
| 100 | * \param scv The sub-control volume | ||
| 101 | */ | ||
| 102 | 212054 | std::bitset<DirichletValues::dimension> hasInternalDirichletConstraint(const Element& element, const SubControlVolume& scv) const | |
| 103 | { | ||
| 104 |
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212054 | std::bitset<DirichletValues::dimension> values; |
| 105 | |||
| 106 | // If only Dirichlet BCs are set for the momentum balance, fix the pressure at some cells such that the solution is fully defined. | ||
| 107 | { | ||
| 108 |
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212054 | if (scv.elementIndex() == 0) |
| 109 | 16 | values.set(Indices::pressureIdx); | |
| 110 | } | ||
| 111 | |||
| 112 | return values; | ||
| 113 | } | ||
| 114 | |||
| 115 | /*! | ||
| 116 | * \brief Define the values of internal Dirichlet constraints for a degree of freedom. | ||
| 117 | * \param element The finite element | ||
| 118 | * \param scv The sub-control volume | ||
| 119 | */ | ||
| 120 | 24302 | DirichletValues internalDirichlet(const Element& element, const SubControlVolume& scv) const | |
| 121 | { return DirichletValues{-0.00185227}; } | ||
| 122 | |||
| 123 | template<class ElementVolumeVariables> | ||
| 124 | 1890848 | Sources source(const Element& element, | |
| 125 | const FVElementGeometry& fvGeometry, | ||
| 126 | const ElementVolumeVariables& elemVolVars, | ||
| 127 | const SubControlVolume& scv) const | ||
| 128 | { | ||
| 129 | 1890848 | Sources source(0.0); | |
| 130 | if constexpr (ParentType::isMomentumProblem()) | ||
| 131 | { | ||
| 132 | 1890848 | GlobalPosition globalPos = scv.dofPosition(); | |
| 133 |
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1890848 | if (isInlet_(globalPos)) |
| 134 | { | ||
| 135 | 1960 | const auto& frontalScvf = (*scvfs(fvGeometry, scv).begin()); | |
| 136 | 1960 | source[Indices::momentumXBalanceIdx] = momentumForce_ * frontalScvf.area() / scv.volume(); | |
| 137 | } | ||
| 138 | } | ||
| 139 | |||
| 140 | 1890848 | return source; | |
| 141 | } | ||
| 142 | |||
| 143 | /*! | ||
| 144 | * \brief Evaluates the boundary conditions for a Dirichlet control volume. | ||
| 145 | * | ||
| 146 | * \param globalPos The center of the finite volume which ought to be set. | ||
| 147 | */ | ||
| 148 | ✗ | DirichletValues dirichlet(const Element& element, const SubControlVolumeFace& scvf) const | |
| 149 | 570224 | { return DirichletValues(0.0); } | |
| 150 | |||
| 151 | /*! | ||
| 152 | * \brief Returns a reference pressure at a given sub control volume face. | ||
| 153 | * This pressure is subtracted from the actual pressure for the momentum balance | ||
| 154 | * which potentially helps to improve numerical accuracy by avoiding issues related do floating point arithmetic. | ||
| 155 | */ | ||
| 156 | 1791632 | Scalar referencePressure(const Element& element, | |
| 157 | const FVElementGeometry& fvGeometry, | ||
| 158 | const SubControlVolumeFace& scvf) const | ||
| 159 | 1791632 | { return referencePressure_; } | |
| 160 | |||
| 161 | // Return cellCenteredVelocities | ||
| 162 | template <class SolutionVector> | ||
| 163 | std::vector<VelocityVector> cellCenteredVelocity(const SolutionVector& curSol) const | ||
| 164 | { | ||
| 165 | std::vector<VelocityVector> velocity; | ||
| 166 | velocity.resize(this->gridGeometry().elementMapper().size(), VelocityVector(0.0)); | ||
| 167 | |||
| 168 | // calculate cell-center-averaged velocities | ||
| 169 | for (const auto& element : elements(this->gridGeometry().gridView())) | ||
| 170 | { | ||
| 171 | auto fvGeometry = localView(this->gridGeometry()); | ||
| 172 | fvGeometry.bindElement(element); | ||
| 173 | unsigned int elementIdx = this->gridGeometry().elementMapper().index(element); | ||
| 174 | |||
| 175 | // calculate velocities | ||
| 176 | VelocityVector velocityTemp(0.0); | ||
| 177 | for (auto&& scv : scvs(fvGeometry)) | ||
| 178 | { | ||
| 179 | const int dofIdxFace = scv.dofIndex(); | ||
| 180 | const auto numericalSolutionFace = curSol[CouplingManager::freeFlowMomentumIndex] | ||
| 181 | [dofIdxFace] | ||
| 182 | [Indices::velocity(scv.dofAxis())]; | ||
| 183 | velocityTemp[scv.dofAxis()] += numericalSolutionFace; | ||
| 184 | } | ||
| 185 | |||
| 186 | for (unsigned int dimIdx = 0; dimIdx < dimWorld; ++dimIdx) | ||
| 187 | velocity[elementIdx][dimIdx] = velocityTemp[dimIdx] * 0.5; // faces are equidistant to cell center | ||
| 188 | } | ||
| 189 | return velocity; | ||
| 190 | } | ||
| 191 | |||
| 192 | private: | ||
| 193 |
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1890848 | bool isInlet_(const GlobalPosition& globalPos) const |
| 194 |
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1890848 | { return (globalPos[0] < this->gridGeometry().bBoxMin()[0] + eps_); } |
| 195 | |||
| 196 | bool isOutlet_(const GlobalPosition& globalPos) const | ||
| 197 | { return (globalPos[0] > this->gridGeometry().bBoxMax()[0] - eps_); } | ||
| 198 | |||
| 199 | Scalar eps_; | ||
| 200 | Scalar momentumForce_; | ||
| 201 | Scalar referencePressure_; | ||
| 202 | std::string problemName_; | ||
| 203 | }; | ||
| 204 | |||
| 205 | } // end namespace Dumux | ||
| 206 | |||
| 207 | #endif | ||
| 208 |