mirror of
https://github.com/OPM/opm-simulators.git
synced 2024-12-25 16:51:00 -06:00
68 lines
3.0 KiB
C++
68 lines
3.0 KiB
C++
/*
|
|
Copyright 2015 SINTEF ICT, Applied Mathematics.
|
|
|
|
This file is part of the Open Porous Media project (OPM).
|
|
|
|
OPM is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
OPM is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with OPM. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef OPM_NEWTONITERATIONUTILITIES_HEADER_INCLUDED
|
|
#define OPM_NEWTONITERATIONUTILITIES_HEADER_INCLUDED
|
|
|
|
#include <opm/autodiff/AutoDiffBlock.hpp>
|
|
#include <boost/any.hpp>
|
|
#include <vector>
|
|
|
|
namespace Opm
|
|
{
|
|
|
|
/// Eliminate a variable via Schur complement.
|
|
/// \param[in] eqs set of equations with Jacobians
|
|
/// \param[in] n index of equation/variable to eliminate.
|
|
/// \return new set of equations, one smaller than eqs.
|
|
/// Note: this method requires the eliminated variable to have the same size
|
|
/// as the equation in the corresponding position (that also will be eliminated).
|
|
std::vector< AutoDiffBlock<double> >
|
|
eliminateVariable(const std::vector< AutoDiffBlock<double> >& eqs,
|
|
const int n);
|
|
|
|
/// Recover that value of a variable previously eliminated.
|
|
/// \param[in] equation previously eliminated equation.
|
|
/// \param[in] partial_solution solution to the remainder system after elimination.
|
|
/// \param[in] n index of equation/variable that was eliminated.
|
|
/// \return solution to complete system.
|
|
AutoDiffBlock<double>::V recoverVariable(const AutoDiffBlock<double>& equation,
|
|
const AutoDiffBlock<double>::V& partial_solution,
|
|
const int n);
|
|
|
|
/// Form an elliptic system of equations.
|
|
/// \param[in] num_phases the number of fluid phases
|
|
/// \param[in] eqs the equations
|
|
/// \param[out] A the resulting full system matrix
|
|
/// \param[out] b the right hand side
|
|
/// This function will deal with the first num_phases
|
|
/// equations in eqs, and return a matrix A for the full
|
|
/// system that has a elliptic upper left corner, if possible.
|
|
void formEllipticSystem(const int num_phases,
|
|
const std::vector< AutoDiffBlock<double> >& eqs,
|
|
Eigen::SparseMatrix<double, Eigen::RowMajor>& A,
|
|
AutoDiffBlock<double>::V& b);
|
|
|
|
/// Return true if this is a serial run, or rank zero on an MPI run.
|
|
bool isIORank(const boost::any& parallel_info);
|
|
|
|
} // namespace Opm
|
|
|
|
#endif // OPM_NEWTONITERATIONUTILITIES_HEADER_INCLUDED
|