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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 ExtendedRichardsModel | ||
| 10 | * \brief The primary variable switch for the extended Richards model. | ||
| 11 | */ | ||
| 12 | |||
| 13 | #ifndef DUMUX_RICHARDSEXTENDED_PRIMARY_VARIABLE_SWITCH_HH | ||
| 14 | #define DUMUX_RICHARDSEXTENDED_PRIMARY_VARIABLE_SWITCH_HH | ||
| 15 | |||
| 16 | #include <dumux/common/exceptions.hh> | ||
| 17 | #include <dumux/common/parameters.hh> | ||
| 18 | #include <dumux/material/constants.hh> | ||
| 19 | #include <dumux/porousmediumflow/compositional/primaryvariableswitch.hh> | ||
| 20 | |||
| 21 | namespace Dumux { | ||
| 22 | |||
| 23 | /*! | ||
| 24 | * \ingroup RichardsModel | ||
| 25 | * \brief The primary variable switch controlling the phase presence state variable. | ||
| 26 | */ | ||
| 27 | ✗ | class ExtendedRichardsPrimaryVariableSwitch | |
| 28 | : public PrimaryVariableSwitch<ExtendedRichardsPrimaryVariableSwitch> | ||
| 29 | { | ||
| 30 | using ParentType = PrimaryVariableSwitch<ExtendedRichardsPrimaryVariableSwitch>; | ||
| 31 | friend ParentType; | ||
| 32 | |||
| 33 | public: | ||
| 34 | ✗ | using ParentType::ParentType; | |
| 35 | |||
| 36 | protected: | ||
| 37 | |||
| 38 | // perform variable switch at a degree of freedom location | ||
| 39 | template<class VolumeVariables, class GlobalPosition> | ||
| 40 | 37470 | bool update_(typename VolumeVariables::PrimaryVariables& priVars, | |
| 41 | const VolumeVariables& volVars, | ||
| 42 | std::size_t dofIdxGlobal, | ||
| 43 | const GlobalPosition& globalPos) | ||
| 44 | { | ||
| 45 | using Scalar = typename VolumeVariables::PrimaryVariables::value_type; | ||
| 46 | using Indices = typename VolumeVariables::Indices; | ||
| 47 | using FluidSystem = typename VolumeVariables::FluidSystem; | ||
| 48 | |||
| 49 |
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37470 | static const bool usePriVarSwitch = getParam<bool>("Richards.UsePrimaryVariableSwitch"); |
| 50 |
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37470 | if (!usePriVarSwitch) |
| 51 | return false; | ||
| 52 | |||
| 53 | static constexpr int liquidCompIdx = FluidSystem::liquidPhaseIdx; | ||
| 54 | |||
| 55 | // evaluate primary variable switch | ||
| 56 | 37470 | bool wouldSwitch = false; | |
| 57 | 37470 | int phasePresence = priVars.state(); | |
| 58 | 37470 | int newPhasePresence = phasePresence; | |
| 59 | |||
| 60 | // check if a primary var switch is necessary | ||
| 61 |
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37470 | if (phasePresence == Indices::gasPhaseOnly) |
| 62 | { | ||
| 63 | // if the mole fraction of water is larger than the one | ||
| 64 | // predicted by a liquid-vapor equilibrium | ||
| 65 | 344 | Scalar xnw = volVars.moleFraction(FluidSystem::gasPhaseIdx, liquidCompIdx); | |
| 66 | 688 | Scalar xnwPredicted = FluidSystem::H2O::vaporPressure(volVars.temperature()) | |
| 67 |
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344 | / volVars.pressure(FluidSystem::gasPhaseIdx); |
| 68 | |||
| 69 | 344 | Scalar xwMax = 1.0; | |
| 70 |
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344 | if (xnw / xnwPredicted > xwMax) |
| 71 | ✗ | wouldSwitch = true; | |
| 72 |
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1032 | if (this->wasSwitched_[dofIdxGlobal]) |
| 73 | 11 | xwMax *= 1.01; | |
| 74 | |||
| 75 | // if the ratio of predicted mole fraction to current mole fraction is larger than | ||
| 76 | // 100%, wetting phase appears | ||
| 77 |
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344 | if (xnw / xnwPredicted > xwMax) |
| 78 | { | ||
| 79 | // wetting phase appears | ||
| 80 | ✗ | if (this->verbosity() > 1) | |
| 81 | ✗ | std::cout << "Liquid phase appears at dof " << dofIdxGlobal | |
| 82 | ✗ | << ", coordinates: " << globalPos << ", xnw / xnwPredicted * 100: " | |
| 83 | ✗ | << xnw / xnwPredicted * 100 << "%" | |
| 84 | ✗ | << ", at x_n^w: " << priVars[Indices::switchIdx] << std::endl; | |
| 85 | ✗ | newPhasePresence = Indices::bothPhases; | |
| 86 | ✗ | priVars[Indices::switchIdx] = 0.0; | |
| 87 | } | ||
| 88 | } | ||
| 89 |
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37126 | else if (phasePresence == Indices::bothPhases) |
| 90 | { | ||
| 91 | 37126 | Scalar Smin = 0.0; | |
| 92 |
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111378 | if (this->wasSwitched_[dofIdxGlobal]) |
| 93 | ✗ | Smin = -0.01; | |
| 94 | |||
| 95 |
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74252 | if (volVars.saturation(FluidSystem::liquidPhaseIdx) <= Smin) |
| 96 | { | ||
| 97 | 11 | wouldSwitch = true; | |
| 98 | // wetting phase disappears | ||
| 99 | 11 | newPhasePresence = Indices::gasPhaseOnly; | |
| 100 |
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22 | priVars[Indices::switchIdx] = volVars.moleFraction(FluidSystem::gasPhaseIdx, liquidCompIdx); |
| 101 | |||
| 102 |
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11 | if (this->verbosity() > 1) |
| 103 | ✗ | std::cout << "Liquid phase disappears at dof " << dofIdxGlobal | |
| 104 | ✗ | << ", coordinates: " << globalPos << ", sw: " | |
| 105 | ✗ | << volVars.saturation(FluidSystem::liquidPhaseIdx) | |
| 106 | ✗ | << ", x_n^w: " << priVars[Indices::switchIdx] << std::endl; | |
| 107 | } | ||
| 108 | } | ||
| 109 | ✗ | else if (phasePresence == Indices::liquidPhaseOnly) | |
| 110 | { | ||
| 111 | ✗ | DUNE_THROW(Dune::NotImplemented, "Water phase only phase presence!"); | |
| 112 | } | ||
| 113 | |||
| 114 |
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37470 | priVars.setState(newPhasePresence); |
| 115 |
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74940 | this->wasSwitched_[dofIdxGlobal] = wouldSwitch; |
| 116 | 37470 | return phasePresence != newPhasePresence; | |
| 117 | } | ||
| 118 | }; | ||
| 119 | |||
| 120 | } // end namespace Dumux | ||
| 121 | |||
| 122 | #endif | ||
| 123 |