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This file is part of OpenFOAM. OpenFOAM 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 2 of the License, or (at your option) any later version. OpenFOAM 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 OpenFOAM; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Agglomerated algebraic multigrid solver tuned for the FV elliptic matrices. Characteristics: - Specific for elliptic matrices (symmetric positive definite, diagonally equal or better). - Choice of smoother: Gauss-Seidel (assymetric). - Restriction operator: summation (zero-order). - Prolongation operator: injection (zero-order). - Agglomeration algorithm: single-pass pairwise agglomeration with change of direction between levels. - Coarse matrix creation: central coefficient: summation of fine grid central coefficients with the removal of intra-cluster face; off-diagonal coefficient: summation of off-diagonal faces. - Coarse matrix scaling: performed by correction scaling, using steepest descent optimisation. - Type of cycle: Saw-tooth (V-cycle with no pre-smoothing). Top-level matrices below 100 equations solved using CG.
Definition in file amgSymSolver.H.
Go to the source code of this file.
Namespaces | |
namespace | Foam |
Classes | |
class | amgSymSolver |