ISSN:
1573-7691
Keywords:
Navier-Stokes equations
;
spectral-element discretization
;
iterative methods
;
preconditioning
;
Uzawa decoupling
Source:
Springer Online Journal Archives 1860-2000
Topics:
Computer Science
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01578382
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