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https://github.com/OPM/opm-simulators.git
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cb483e92cc
Commit 4aa0eaf introduced density and viscosity evaluators into the
BlackoilPropsAdInterface that accepted an externally assignable
condition to distinguish saturated from unsaturated cases. As a
result of a few low-level technical problems with that approach,
this commit changes those affected interfaces to use the black-oil
specific 'PhasePresence' facility of opm-core's commit a033329.
Update callers accordingly.
231 lines
8.3 KiB
C++
231 lines
8.3 KiB
C++
/*
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Copyright 2013 SINTEF ICT, Applied Mathematics.
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPM_FULLYIMPLICITBLACKOILSOLVER_HEADER_INCLUDED
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#define OPM_FULLYIMPLICITBLACKOILSOLVER_HEADER_INCLUDED
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#include <opm/autodiff/AutoDiffBlock.hpp>
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#include <opm/autodiff/AutoDiffHelpers.hpp>
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#include <opm/autodiff/BlackoilPropsAdInterface.hpp>
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struct UnstructuredGrid;
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struct Wells;
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namespace Opm {
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class DerivedGeology;
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class RockCompressibility;
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class LinearSolverInterface;
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class BlackoilState;
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class WellState;
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/// A fully implicit solver for the black-oil problem.
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///
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/// The simulator is capable of handling three-phase problems
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/// where gas can be dissolved in oil (but not vice versa). It
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/// uses an industry-standard TPFA discretization with per-phase
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/// upwind weighting of mobilities.
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///
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/// It uses automatic differentiation via the class AutoDiffBlock
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/// to simplify assembly of the jacobian matrix.
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class FullyImplicitBlackoilSolver
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{
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public:
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/// Construct a solver. It will retain references to the
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/// arguments of this functions, and they are expected to
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/// remain in scope for the lifetime of the solver.
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/// \param[in] grid grid data structure
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/// \param[in] fluid fluid properties
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/// \param[in] geo rock properties
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/// \param[in] rock_comp_props if non-null, rock compressibility properties
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/// \param[in] wells well structure
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/// \param[in] linsolver linear solver
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FullyImplicitBlackoilSolver(const UnstructuredGrid& grid ,
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const BlackoilPropsAdInterface& fluid,
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const DerivedGeology& geo ,
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const RockCompressibility* rock_comp_props,
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const Wells& wells,
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const LinearSolverInterface& linsolver);
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/// Take a single forward step, modifiying
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/// state.pressure()
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/// state.faceflux()
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/// state.saturation()
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/// state.gasoilratio()
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/// wstate.bhp()
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/// \param[in] dt time step size
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/// \param[in] state reservoir state
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/// \param[in] wstate well state
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void
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step(const double dt ,
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BlackoilState& state ,
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WellState& wstate);
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private:
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// Types and enums
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typedef AutoDiffBlock<double> ADB;
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typedef ADB::V V;
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typedef ADB::M M;
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typedef Eigen::Array<double,
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Eigen::Dynamic,
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Eigen::Dynamic,
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Eigen::RowMajor> DataBlock;
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struct ReservoirResidualQuant {
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ReservoirResidualQuant();
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std::vector<ADB> accum; // Accumulations
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ADB mflux; // Mass flux (surface conditions)
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ADB b; // Reciprocal FVF
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ADB head; // Pressure drop across int. interfaces
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ADB mob; // Phase mobility (per cell)
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};
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struct SolutionState {
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SolutionState(const int np);
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ADB pressure;
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std::vector<ADB> saturation;
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ADB rs;
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ADB qs;
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ADB bhp;
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};
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struct WellOps {
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WellOps(const Wells& wells);
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M w2p; // well -> perf (scatter)
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M p2w; // perf -> well (gather)
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};
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enum { Water = BlackoilPropsAdInterface::Water,
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Oil = BlackoilPropsAdInterface::Oil ,
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Gas = BlackoilPropsAdInterface::Gas };
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// Member data
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const UnstructuredGrid& grid_;
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const BlackoilPropsAdInterface& fluid_;
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const DerivedGeology& geo_;
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const RockCompressibility* rock_comp_props_;
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const Wells& wells_;
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const LinearSolverInterface& linsolver_;
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// For each canonical phase -> true if active
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const std::vector<bool> active_;
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// Size = # active faces. Maps active -> canonical phase indices.
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const std::vector<int> canph_;
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const std::vector<int> cells_; // All grid cells
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HelperOps ops_;
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const WellOps wops_;
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const M grav_;
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std::vector<ReservoirResidualQuant> rq_;
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// The mass_balance vector has one element for each active phase,
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// each of which has size equal to the number of cells.
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// The well_eq has size equal to the number of wells.
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struct {
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std::vector<ADB> mass_balance;
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ADB rs_or_sg_eq; // Only used if both gas and oil present
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ADB well_flux_eq;
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ADB well_eq;
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} residual_;
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// Private methods.
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SolutionState
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constantState(const BlackoilState& x,
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const WellState& xw);
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SolutionState
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variableState(const BlackoilState& x,
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const WellState& xw);
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void
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computeAccum(const SolutionState& state,
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const int aix );
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void
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assemble(const V& dtpv,
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const BlackoilState& x ,
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const WellState& xw );
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V solveJacobianSystem() const;
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void updateState(const V& dx,
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BlackoilState& state,
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WellState& well_state) const;
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std::vector<ADB>
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computeRelPerm(const SolutionState& state) const;
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std::vector<ADB>
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computeRelPermWells(const SolutionState& state,
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const DataBlock& well_s,
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const std::vector<int>& well_cells) const;
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void
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computeMassFlux(const int actph ,
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const V& transi,
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const std::vector<ADB>& kr ,
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const SolutionState& state );
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double
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residualNorm() const;
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ADB
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fluidViscosity(const int phase,
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const ADB& p ,
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const ADB& rs ,
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const std::vector<PhasePresence>& cond,
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const std::vector<int>& cells) const;
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ADB
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fluidReciprocFVF(const int phase,
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const ADB& p ,
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const ADB& rs ,
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const std::vector<PhasePresence>& cond,
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const std::vector<int>& cells) const;
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ADB
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fluidDensity(const int phase,
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const ADB& p ,
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const ADB& rs ,
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const std::vector<PhasePresence>& cond,
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const std::vector<int>& cells) const;
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V
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fluidRsMax(const V& p,
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const std::vector<int>& cells) const;
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ADB
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fluidRsMax(const ADB& p,
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const std::vector<int>& cells) const;
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ADB
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poroMult(const ADB& p) const;
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ADB
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transMult(const ADB& p) const;
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void
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classifyCondition(const SolutionState& state,
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std::vector<PhasePresence>& cond ) const;
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};
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} // namespace Opm
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#endif // OPM_FULLYIMPLICITBLACKOILSOLVER_HEADER_INCLUDED
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