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Digitale Medien

Spectral-element preconditioners for the uzawa pressure operator applied to incompressible flows (1994)

Couzy, W. ; Deville, M. O.

Springer

Journal of scientific computing 9 (1994), S. 107-122

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ISSN: 1573-7691

Schlagwort(e): Navier-Stokes equations ; spectral-element discretization ; iterative methods ; preconditioning ; Uzawa decoupling

Quelle: Springer Online Journal Archives 1860-2000

Thema: Informatik

Notizen: Abstract Seven preconditioners for the Uzawa pressure operator are discussed in the context of the spectral-element discretization of unsteady, incompressible flows. An already existing algorithm, based on decomposition of the pressure operator, is modified in order to reduce the number of iterations and cpu time. A twostage preconditioning technique is set up to solve efficiently problems at high Reynold numbers. The performance of the preconditioners is tested on a number of Stokes and Navier-Stokes problems in three dimensions.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01578382

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