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Titolo:
A parallel block-preconditioned GCR method for incompressible flow problems
Autore:
Vuik, C; Frank, J; Segal, A;
Indirizzi:
Delft Univ Technol, Fac Informat Technol & Syst, Dept Appl Math Anal, NL-2600 GA Delft, Netherlands Delft Univ Technol Delft Netherlands NL-2600 GA00 GA Delft, Netherlands
Titolo Testata:
FUTURE GENERATION COMPUTER SYSTEMS
fascicolo: 1, volume: 18, anno: 2001,
pagine: 31 - 40
SICI:
0167-739X(200109)18:1<31:APBGMF>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
NAVIER-STOKES EQUATIONS; NONSMOOTH STAGGERED GRIDS; CONJUGATE-GRADIENT METHOD; DOMAIN DECOMPOSITION; GMRES METHOD; COMPUTING FLOWS; IMPLEMENTATION; ALGORITHMS; COMMUNICATION;
Keywords:
domain decomposition; approximate subdomain solution; parallel Krylov subspace methods; orthogonalization methods; incompressible Navier-Stokes equations;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Vuik, C Delft Univ Technol, Fac Informat Technol & Syst, Dept Appl Math Anal, POB 5031, NL-2600 GA Delft, Netherlands Delft Univ Technol POB 5031 Delft Netherlands NL-2600 GA herlands
Citazione:
C. Vuik et al., "A parallel block-preconditioned GCR method for incompressible flow problems", FUT GENER C, 18(1), 2001, pp. 31-40

Abstract

Efficient parallel algorithms are required to simulate incompressible turbulent flows in complex two- and three-dimensional domains. The incompressible Navier-Stoke's equations are discretized in general coordinates on a structured grid. For a flow on a general domain we use an unstructured decomposition of the domain into subdomains of simple shape, with a structured grid inside each subdomain. We have developed a parallel block-preconditioned GCR method to solve the resulting systems of linear equations. The method can be smoothly varied between a coarse grain parallel method in which the subdomain problems are solved accurately with an inner iteration process anda fine grain parallel method when only a preconditioner is used to approximate the solution on the blocks. Parallel performance results for Boussinesq flow in a cavity are included. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 04/04/20 alle ore 01:45:01