Previous: Under-Relaxation Up: simpleFOAM Solver General Properties Next: SIMPLE Algorithm This is an automatically generated documentation by LaTeX2HTML utility. In case of any issue, please, contact us at info@cfdsupport.com. System of Linear Equations Finite Volume Method converts the system of differential equations to the system of linear equations:(11.19)Such a linear algebra problem can be solved with following methods implemented in OpenFOAM:Linear system solver method:GAMG (Geometric-Algebraic Multi-Grid) for both symmetric and asymmetric matricesPBiCG (Preconditioned Biconjugate Gradient ) for asymmetric matricesPCG (Preconditioned Conjugate Gradient) for symmetric matricessmoothSolver (solver using a smoother for both symmetric and asymmetric matrices )ICCG (Incomplete Cholesky preconditioned PCG solver, i.e. PCG with DIC )11.1BICCG (Diagonal Incomplete LU preconditioned PBiCG solver, i.e. PBiCG with DILU)11.2Method preconditioner:DILU (Diagonal Incomplete LU decomposition)DIC (Diagonal incomplete-Cholesky) for symmetric matricesFDIC (Faster diagonal incomplete-Cholesky) for symmetric matricesdiagonal (Diagonal)GAMG (Geometric-Algebraic Multi-Grid)none (No preconditioning)DICGaussSeidel, GaussSeidel, nonBlockingGaussSeidel, symGaussSeidel (for symmetric matrices)For more details see e.g. [13]. Previous: Under-Relaxation Up: simpleFOAM Solver General Properties Next: SIMPLE Algorithm OpenFOAM Training by CFD Support, CFD SUPPORT, info@cfdsupport.com +420 212 243 883 © CFD support, s.r.o., Sokolovská 270/201, 190 00 Praha 9, Czech Republic