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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 OnePTests | ||
| 10 | * \brief A test for internal Dirichlet constraints | ||
| 11 | */ | ||
| 12 | |||
| 13 | #ifndef DUMUX_INCOMPRESSIBLE_ONEP_TEST_PROBLEM_INTERNAL_DIRICHLET_HH | ||
| 14 | #define DUMUX_INCOMPRESSIBLE_ONEP_TEST_PROBLEM_INTERNAL_DIRICHLET_HH | ||
| 15 | |||
| 16 | #include <dumux/common/boundarytypes.hh> | ||
| 17 | #include <dumux/common/numeqvector.hh> | ||
| 18 | |||
| 19 | #include <test/porousmediumflow/1p/incompressible/problem.hh> | ||
| 20 | |||
| 21 | namespace Dumux { | ||
| 22 | /*! | ||
| 23 | * \ingroup OnePTests | ||
| 24 | * \brief A test for internal Dirichlet constraints | ||
| 25 | */ | ||
| 26 | template<class TypeTag> | ||
| 27 | 6 | class OnePTestProblemInternalDirichlet : public OnePTestProblem<TypeTag> | |
| 28 | { | ||
| 29 | using ParentType = OnePTestProblem<TypeTag>; | ||
| 30 | using GridView = typename GetPropType<TypeTag, Properties::GridGeometry>::GridView; | ||
| 31 | using Element = typename GridView::template Codim<0>::Entity; | ||
| 32 | using Scalar = GetPropType<TypeTag, Properties::Scalar>; | ||
| 33 | using PrimaryVariables = GetPropType<TypeTag, Properties::PrimaryVariables>; | ||
| 34 | using NeumannValues = Dumux::NumEqVector<PrimaryVariables>; | ||
| 35 | using ModelTraits = GetPropType<TypeTag, Properties::ModelTraits>; | ||
| 36 | using BoundaryTypes = Dumux::BoundaryTypes<ModelTraits::numEq()>; | ||
| 37 | using Indices = typename ModelTraits::Indices; | ||
| 38 | using GridGeometry = GetPropType<TypeTag, Properties::GridGeometry>; | ||
| 39 | using SubControlVolume = typename GridGeometry::SubControlVolume; | ||
| 40 | using GlobalPosition = typename Element::Geometry::GlobalCoordinate; | ||
| 41 | |||
| 42 | static constexpr auto numEq = ModelTraits::numEq(); | ||
| 43 | |||
| 44 | public: | ||
| 45 | 2 | OnePTestProblemInternalDirichlet(std::shared_ptr<const GridGeometry> gridGeometry) | |
| 46 |
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2 | : ParentType(gridGeometry) |
| 47 | 2 | {} | |
| 48 | |||
| 49 | /*! | ||
| 50 | * \brief Specifies which kind of boundary condition should be | ||
| 51 | * used for which equation on a given boundary control volume. | ||
| 52 | * | ||
| 53 | * \param globalPos The position of the center of the finite volume | ||
| 54 | */ | ||
| 55 |
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508 | BoundaryTypes boundaryTypesAtPos(const GlobalPosition &globalPos) const |
| 56 | { | ||
| 57 |
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508 | BoundaryTypes values; |
| 58 | values.setAllNeumann(); | ||
| 59 | return values; | ||
| 60 | } | ||
| 61 | |||
| 62 | /*! | ||
| 63 | * \brief Evaluate the boundary conditions for a neumann | ||
| 64 | * boundary segment. | ||
| 65 | * | ||
| 66 | * \param globalPos The position of the boundary face's integration point in global coordinates | ||
| 67 | * | ||
| 68 | * Negative values mean influx. | ||
| 69 | * E.g. for the mass balance that would be the mass flux in \f$ [ kg / (m^2 \cdot s)] \f$. | ||
| 70 | */ | ||
| 71 | 360 | NeumannValues neumannAtPos(const GlobalPosition& globalPos) const | |
| 72 | { | ||
| 73 |
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360 | const auto& gg = this->gridGeometry(); |
| 74 |
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360 | if (globalPos[0] < gg.bBoxMin()[0] + eps_) |
| 75 | return NeumannValues(1e3); | ||
| 76 |
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270 | else if (globalPos[1] < gg.bBoxMin()[1] + eps_) |
| 77 | return NeumannValues(-1e3); | ||
| 78 | else | ||
| 79 | return NeumannValues(0.0); | ||
| 80 | } | ||
| 81 | |||
| 82 | //! Enable internal Dirichlet constraints | ||
| 83 | static constexpr bool enableInternalDirichletConstraints() | ||
| 84 | { return true; } | ||
| 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 | 1500 | std::bitset<numEq> hasInternalDirichletConstraint(const Element& element, | |
| 97 | const SubControlVolume& scv) const | ||
| 98 | { | ||
| 99 | // the pure Neumann problem is only defined up to a constant | ||
| 100 | // we create a well-posed problem by fixing the pressure at one dof in the middle of the domain | ||
| 101 |
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1500 | std::bitset<numEq> values; |
| 102 |
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1500 | if (scv.dofIndex() == static_cast<std::size_t>(this->gridGeometry().numDofs()/2)) |
| 103 | 15 | values.set(Indices::pressureIdx); | |
| 104 | return values; | ||
| 105 | } | ||
| 106 | |||
| 107 | /*! | ||
| 108 | * \brief Define the values of internal Dirichlet constraints for a degree of freedom. | ||
| 109 | * \param element The finite element | ||
| 110 | * \param scv The sub-control volume | ||
| 111 | */ | ||
| 112 | 106 | PrimaryVariables internalDirichlet(const Element& element, const SubControlVolume& scv) const | |
| 113 | { return PrimaryVariables(1e5); } | ||
| 114 | |||
| 115 | private: | ||
| 116 | static constexpr Scalar eps_ = 1.5e-7; | ||
| 117 | }; | ||
| 118 | |||
| 119 | } // end namespace Dumux | ||
| 120 | |||
| 121 | #endif | ||
| 122 |