Enhanced GMRES acceleration techniques for some CFD problems

Azzeddine Souläimani, Nizar Ben Salah, Yousef Saad

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)1-20
Number of pages20
JournalInternational Journal of Computational Fluid Dynamics
Issue number1
StatePublished - Feb 2002

Bibliographical note

Funding Information:
This research has been funded by the Natural Sciences and Engineering Research Council of Canada (NSERC), PSIR research program of ETS and by Bombardier. Yousef Saad acknowledges support from the Army Research Office and the Minnesota Supercomputing Institute.


  • Broyden
  • Deflation
  • Incompressible
  • Stablization


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