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Modeling subgrid viscosity for advection–diffusion problems

✍ Scribed by F. Brezzi; P. Houston; D. Marini; E. Süli

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
390 KB
Volume
190
Category
Article
ISSN
0045-7825

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✦ Synopsis

We analyse the eect of the subgrid viscosity on a ®nite element discretisation, with piecewise linear elements, of a linear advection± diffusion scalar equation. We point out the importance of a proper tune-up of the viscosity coef®cient, and we propose a heuristic method for obtaining reasonable values for it. The extension to more general problems is then hinted in the last section. Ó 2000 Elsevier Science B.V. All rights reserved. www.elsevier.com/locate/cma Comput. Methods Appl. Mech. Engrg. 190 (2000) 1601±1610 * Corresponding author. 1 Paul Houston and Endre S uli acknowledge the ®nancial support of the EPSRC (Grant GR/K76221).

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