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A multi-element group preconditioned GMRES algorithm for nonsymmetric systems arising in finite element analysis. (English) Zbl 0687.76065

Summary: A multi-element group, domain decomposition algorithm is presented for solving linear nonsymmetric systems arising in finite element analysis. The iterative strategy employed is based on the generalized minimum residual procedure originally proposed by Y. Saad and M. H. Schultz [GMRES: a generalized minimal residual algorithm for solving nonsymmetric linear systems, Res. Rep. YALEU/DCS/RR-524, Dep. Comput. Sci., Yale Univ., 1983; SIAM J. Sci. Stat. Comput. 7, 856–869 (1986; Zbl 0599.65018)]. Two levels of preconditioning are investigated. Coding is presented which fully exploits vector-architectured computers. Applications to problems of high-speed compressible flow illustrate the effectiveness of the scheme.

MSC:

76H05 Transonic flows
76-04 Software, source code, etc. for problems pertaining to fluid mechanics
76N15 Gas dynamics (general theory)
76M99 Basic methods in fluid mechanics

Citations:

Zbl 0599.65018
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References:

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