Enhanced GMRES acceleration techniques for some CFD problems

Azzeddine Souläimani; Nizar Ben Salah; Yousef Saad

doi:10.1080/10618560290003991

Enhanced GMRES acceleration techniques for some CFD problems

Azzeddine Souläimani, Nizar Ben Salah, Yousef Saad

Computer Science and Engineering

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	1-20
Number of pages	20
Journal	International Journal of Computational Fluid Dynamics
Volume	16
Issue number	1
DOIs	https://doi.org/10.1080/10618560290003991
State	Published - Feb 1 2002

Keywords

Broyden
Deflation
FGMRES
GMRES
Incompressible
Stablization

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AU - Salah, Nizar Ben

AU - Saad, Yousef

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KW - Incompressible

KW - Stablization

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