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Time Filtering in Large Eddy SimulationsAn explicit time filter is applied to the Navier-Stokes equation prior to a space filter. The time filter is supposed to be smooth, and an exact expansion depending on the time derivatives of the velocity is derived for the associated stress tensor. On the contrary, the effect of the space filter is treated as usual and an eddy viscosity model is introduced in the LES equation. The total stress is thus represented using a new class of mixed models combining time and space derivatives of the LES field.
Document ID
20010021411
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Carati, Daniele
(Free Univ. Brussels, Belgium)
Wray, Alan A.
(NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
August 20, 2013
Publication Date
November 1, 2000
Publication Information
Publication: Studying Turbulence Using Numerical Simulation Databases, 8. Proceedings of the 2000 Summer Program
Subject Category
Fluid Mechanics And Thermodynamics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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