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4527ce8ffd
We need it serveral places and all of them seem to have access to NewtonIterationBlackoilInterface. This makes it natural to give access to it and prevent users from having to forward it manually at several places in the simulator driver.
118 lines
5.4 KiB
C++
118 lines
5.4 KiB
C++
/*
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Copyright 2014 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_NEWTONITERATIONBLACKOILCPR_HEADER_INCLUDED
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#define OPM_NEWTONITERATIONBLACKOILCPR_HEADER_INCLUDED
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#include <opm/autodiff/DuneMatrix.hpp>
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#include <opm/autodiff/NewtonIterationBlackoilInterface.hpp>
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#include <opm/autodiff/CPRPreconditioner.hpp>
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#include <opm/core/utility/parameters/ParameterGroup.hpp>
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#include <opm/core/linalg/LinearSolverInterface.hpp>
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#include <dune/istl/scalarproducts.hh>
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#include <dune/istl/operators.hh>
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#include <dune/istl/bvector.hh>
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#include <memory>
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namespace Opm
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{
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/// This class solves the fully implicit black-oil system by
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/// applying a Constrained Pressure Residual preconditioning
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/// strategy.
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/// The approach is similar to the one described in
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/// "Preconditioning for Efficiently Applying Algebraic Multigrid
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/// in Fully Implicit Reservoir Simulations" by Gries et al (SPE 163608).
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class NewtonIterationBlackoilCPR : public NewtonIterationBlackoilInterface
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{
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typedef Dune::FieldVector<double, 1 > VectorBlockType;
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typedef Dune::FieldMatrix<double, 1, 1> MatrixBlockType;
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typedef Dune::BCRSMatrix <MatrixBlockType> Mat;
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typedef Dune::BlockVector<VectorBlockType> Vector;
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public:
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/// Construct a system solver.
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/// \param[in] param parameters controlling the behaviour of
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/// the preconditioning and choice of
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/// linear solvers.
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/// Parameters:
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/// cpr_relax (default 1.0) relaxation for the preconditioner
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/// cpr_ilu_n (default 0) use ILU(n) for preconditioning of the linear system
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/// cpr_use_amg (default false) if true, use AMG preconditioner for elliptic part
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/// cpr_use_bicgstab (default true) if true, use BiCGStab (else use CG) for elliptic part
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/// \param[in] parallelInformation In the case of a parallel run
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/// with dune-istl the information about the parallelization.
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NewtonIterationBlackoilCPR(const parameter::ParameterGroup& param,
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const boost::any& parallelInformation=boost::any());
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/// Solve the system of linear equations Ax = b, with A being the
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/// combined derivative matrix of the residual and b
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/// being the residual itself.
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/// \param[in] residual residual object containing A and b.
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/// \return the solution x
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virtual SolutionVector computeNewtonIncrement(const LinearisedBlackoilResidual& residual) const;
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/// \copydoc NewtonIterationBlackoilInterface::iterations
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virtual int iterations () const { return iterations_; }
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/// \copydoc NewtonIterationBlackoilInterface::parallelInformation
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virtual const boost::any& parallelInformation() const;
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private:
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/// \brief construct the CPR preconditioner and the solver.
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/// \tparam P The type of the parallel information.
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/// \param parallelInformation the information about the parallelization.
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template<int category=Dune::SolverCategory::sequential, class O, class P>
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void constructPreconditionerAndSolve(O& opA, DuneMatrix istlAe,
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Vector& x, Vector& istlb,
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const P& parallelInformation,
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Dune::InverseOperatorResult& result) const
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{
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typedef Dune::ScalarProductChooser<Vector,P,category> ScalarProductChooser;
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std::unique_ptr<typename ScalarProductChooser::ScalarProduct>
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sp(ScalarProductChooser::construct(parallelInformation));
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// Construct preconditioner.
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// typedef Dune::SeqILU0<Mat,Vector,Vector> Preconditioner;
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typedef Opm::CPRPreconditioner<Mat,Vector,Vector,P> Preconditioner;
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Preconditioner precond(opA.getmat(), istlAe, cpr_relax_, cpr_ilu_n_, cpr_use_amg_, cpr_use_bicgstab_, parallelInformation);
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// Construct linear solver.
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const double tolerance = 1e-3;
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const int maxit = 150;
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const int verbosity = 0;
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const int restart = 40;
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Dune::RestartedGMResSolver<Vector> linsolve(opA, *sp, precond, tolerance, restart, maxit, verbosity);
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// Solve system.
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linsolve.apply(x, istlb, result);
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}
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mutable int iterations_;
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double cpr_relax_;
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unsigned int cpr_ilu_n_;
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bool cpr_use_amg_;
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bool cpr_use_bicgstab_;
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const boost::any& parallelInformation_;
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};
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} // namespace Opm
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#endif // OPM_NEWTONITERATIONBLACKOILCPR_HEADER_INCLUDED
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