Filtered subgrid-scale models

Filtered subgrid-scale models are derived, which are less sensitive to the low-frequency modes than their original counterparts. They are obtained tha nks to the definition of a high-pass discrete test filter. After presenting the theoretical derivation of these models, some a posteriori tests on the incompressible channel flow case are presented. (C) 2000 American Institut e of Physics. [S1070-6631(00)00301-9].