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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 NavierStokesNCTests | ||
| 10 | * \brief Channel flow test for the multi-component staggered grid (Navier-)Stokes model. | ||
| 11 | */ | ||
| 12 | |||
| 13 | #ifndef DUMUX_CHANNEL_MAXWELL_STEFAN_TEST_PROBLEM_HH | ||
| 14 | #define DUMUX_CHANNEL_MAXWELL_STEFAN_TEST_PROBLEM_HH | ||
| 15 | |||
| 16 | #include <dumux/common/parameters.hh> | ||
| 17 | #include <dumux/common/properties.hh> | ||
| 18 | |||
| 19 | #include <dumux/freeflow/navierstokes/boundarytypes.hh> | ||
| 20 | |||
| 21 | #include <dumux/freeflow/navierstokes/momentum/fluxhelper.hh> | ||
| 22 | #include <dumux/freeflow/navierstokes/scalarfluxhelper.hh> | ||
| 23 | |||
| 24 | namespace Dumux { | ||
| 25 | |||
| 26 | /*! | ||
| 27 | * \ingroup NavierStokesNCTests | ||
| 28 | * \brief Test problem for the Maxwell-Stefan model | ||
| 29 | */ | ||
| 30 | template <class TypeTag, class BaseProblem> | ||
| 31 | 2 | class MaxwellStefanNCTestProblem : public BaseProblem | |
| 32 | { | ||
| 33 | using ParentType = BaseProblem; | ||
| 34 | |||
| 35 | using BoundaryTypes = typename ParentType::BoundaryTypes; | ||
| 36 | using GridGeometry = GetPropType<TypeTag, Properties::GridGeometry>; | ||
| 37 | using InitialValues = typename ParentType::InitialValues; | ||
| 38 | using Sources = typename ParentType::Sources; | ||
| 39 | using DirichletValues = typename ParentType::DirichletValues; | ||
| 40 | using BoundaryFluxes = typename ParentType::BoundaryFluxes; | ||
| 41 | using Scalar = GetPropType<TypeTag, Properties::Scalar>; | ||
| 42 | using SubControlVolume = typename GridGeometry::SubControlVolume; | ||
| 43 | using SubControlVolumeFace = typename GridGeometry::SubControlVolumeFace; | ||
| 44 | using FVElementGeometry = typename GridGeometry::LocalView; | ||
| 45 | |||
| 46 | static constexpr auto dimWorld = GridGeometry::GridView::dimensionworld; | ||
| 47 | using Element = typename FVElementGeometry::Element; | ||
| 48 | using GlobalPosition = typename Element::Geometry::GlobalCoordinate; | ||
| 49 | |||
| 50 | using FluidSystem = GetPropType<TypeTag, Properties::FluidSystem>; | ||
| 51 | using Indices = typename GetPropType<TypeTag, Properties::ModelTraits>::Indices; | ||
| 52 | |||
| 53 | using CouplingManager = GetPropType<TypeTag, Properties::CouplingManager>; | ||
| 54 | |||
| 55 | public: | ||
| 56 | 4 | MaxwellStefanNCTestProblem(std::shared_ptr<const GridGeometry> gridGeometry, | |
| 57 | std::shared_ptr<CouplingManager> couplingManager) | ||
| 58 |
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16 | : ParentType(gridGeometry, couplingManager) |
| 59 | 4 | {} | |
| 60 | |||
| 61 | /*! | ||
| 62 | * \brief Specifies which kind of boundary condition should be | ||
| 63 | * used for which equation on a given boundary control volume. | ||
| 64 | * | ||
| 65 | * \param globalPos The position of the center of the finite volume | ||
| 66 | */ | ||
| 67 | ✗ | BoundaryTypes boundaryTypesAtPos(const GlobalPosition &globalPos) const | |
| 68 | { | ||
| 69 | 30720 | BoundaryTypes values; | |
| 70 | |||
| 71 | if constexpr (ParentType::isMomentumProblem()) | ||
| 72 | { | ||
| 73 | ✗ | values.setDirichlet(Indices::velocityXIdx); | |
| 74 | ✗ | values.setDirichlet(Indices::velocityYIdx); | |
| 75 | } | ||
| 76 | else | ||
| 77 |
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30720 | values.setAllNeumann(); |
| 78 | |||
| 79 | ✗ | return values; | |
| 80 | } | ||
| 81 | |||
| 82 | //! Enable internal Dirichlet constraints | ||
| 83 | static constexpr bool enableInternalDirichletConstraints() | ||
| 84 | { return !ParentType::isMomentumProblem(); } | ||
| 85 | |||
| 86 | /*! | ||
| 87 | * \brief Tag a degree of freedom to carry internal Dirichlet constraints. | ||
| 88 | * If true is returned for a dof, the equation for this dof is replaced | ||
| 89 | * by the constraint that its primary variable values must match the | ||
| 90 | * user-defined values obtained from the function internalDirichlet(), | ||
| 91 | * which must be defined in the problem. | ||
| 92 | * | ||
| 93 | * \param element The finite element | ||
| 94 | * \param scv The sub-control volume | ||
| 95 | */ | ||
| 96 | ✗ | std::bitset<DirichletValues::dimension> hasInternalDirichletConstraint(const Element& element, const SubControlVolume& scv) const | |
| 97 | { | ||
| 98 | 284580 | std::bitset<DirichletValues::dimension> values; | |
| 99 | |||
| 100 | // the pure Neumann problem is only defined up to a constant | ||
| 101 | // we create a well-posed problem by fixing the pressure at one dof | ||
| 102 |
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569160 | if (scv.dofIndex() == 0) |
| 103 | 221 | values.set(0); | |
| 104 | |||
| 105 | ✗ | return values; | |
| 106 | } | ||
| 107 | |||
| 108 | /*! | ||
| 109 | * \brief Define the values of internal Dirichlet constraints for a degree of freedom. | ||
| 110 | * \param element The finite element | ||
| 111 | * \param scv The sub-control volume | ||
| 112 | */ | ||
| 113 | ✗ | DirichletValues internalDirichlet(const Element& element, const SubControlVolume& scv) const | |
| 114 | 45900 | { return DirichletValues(1.1e5); } | |
| 115 | |||
| 116 | /*! | ||
| 117 | * \brief Returns Dirichlet boundary values at a given position. | ||
| 118 | * | ||
| 119 | * \param globalPos The global position | ||
| 120 | */ | ||
| 121 | ✗ | DirichletValues dirichletAtPos(const GlobalPosition &globalPos) const | |
| 122 | ✗ | { return initialAtPos(globalPos); } | |
| 123 | |||
| 124 | /*! | ||
| 125 | * \brief Evaluates the boundary conditions for a Neumann control volume. | ||
| 126 | * | ||
| 127 | * \param element The element for which the Neumann boundary condition is set | ||
| 128 | * \param fvGeometry The fvGeometry | ||
| 129 | * \param elemVolVars The element volume variables | ||
| 130 | * \param elemFaceVars The element face variables | ||
| 131 | * \param scvf The boundary sub control volume face | ||
| 132 | */ | ||
| 133 | template<class ElementVolumeVariables, class ElementFluxVariablesCache> | ||
| 134 | ✗ | BoundaryFluxes neumann(const Element& element, | |
| 135 | const FVElementGeometry& fvGeometry, | ||
| 136 | const ElementVolumeVariables& elemVolVars, | ||
| 137 | const ElementFluxVariablesCache& elemFluxVarsCache, | ||
| 138 | const SubControlVolumeFace& scvf) const | ||
| 139 | 48960 | { return BoundaryFluxes(0.0); } | |
| 140 | |||
| 141 | /*! | ||
| 142 | * \brief Evaluates the initial value for a control volume. | ||
| 143 | * | ||
| 144 | * \param globalPos The global position | ||
| 145 | */ | ||
| 146 | ✗ | InitialValues initialAtPos(const GlobalPosition &globalPos) const | |
| 147 | { | ||
| 148 |
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8220 | InitialValues initialValues(0.0); |
| 149 | |||
| 150 | if constexpr (!ParentType::isMomentumProblem()) | ||
| 151 | { | ||
| 152 | static constexpr auto compTwoIdx = Indices::conti0EqIdx + FluidSystem::N2Idx; | ||
| 153 | static constexpr auto compThreeIdx = Indices::conti0EqIdx + FluidSystem::CO2Idx; | ||
| 154 | |||
| 155 | ✗ | initialValues[Indices::pressureIdx] = 1.1e+5; | |
| 156 | ✗ | if (globalPos[0] < 0.5) | |
| 157 | { | ||
| 158 | ✗ | initialValues[compTwoIdx] = 0.50086; | |
| 159 | ✗ | initialValues[compThreeIdx] = 0.49914; | |
| 160 | } | ||
| 161 | else | ||
| 162 | { | ||
| 163 | ✗ | initialValues[compTwoIdx] = 0.49879; | |
| 164 | ✗ | initialValues[compThreeIdx] = 0.0; | |
| 165 | } | ||
| 166 | } | ||
| 167 | else | ||
| 168 | { | ||
| 169 |
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8220 | initialValues[Indices::velocityXIdx] = 0.0; |
| 170 |
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16440 | initialValues[Indices::velocityYIdx] = 0.0; |
| 171 | } | ||
| 172 | |||
| 173 | ✗ | return initialValues; | |
| 174 | } | ||
| 175 | |||
| 176 | |||
| 177 | private: | ||
| 178 | const Scalar eps_{1e-6}; | ||
| 179 | }; | ||
| 180 | } // end namespace Dumux | ||
| 181 | |||
| 182 | #endif | ||
| 183 |