Enhanced GMRES Acceleration Techniques for some CFD Problems
Azzeddine Soulaïmani, Nizar Ben Salah, Yousef El-Mabruk Saad · International journal of computational fluid dynamics · 2002
Large linear systems arising in CFD problems are often solved using iterative methods which typically combine an accelerator such as GMRES and a preconditioner. This paper presents results using several preconditioning techniques, which are not standard in CFD. Numerical tests are carried out for solving three-dimensional incompressible, compressible and magnetohydrodynamic (MHD) problems. A selection of numerical results is presented showing in particular that the flexible GMRES algorithm preconditioned with ILUT factorization provides a fairly robust iterative solver.