Favre filtering and macro-temperature in large-eddy simulations of compressible turbulence

Authors
Lesieur, M Comte, P
Citation
M. Lesieur et P. Comte, Favre filtering and macro-temperature in large-eddy simulations of compressible turbulence, CR A S IIB, 329(5), 2001, pp. 363-368
Citations number
15
Categorie Soggetti
Mechanical Engineering
Journal title
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE B-MECANIQUE
ISSN journal
16207742 → ACNP
Volume
329
Issue
5
Year of publication
2001
Pages
363 - 368
Database
ISI
SICI code
1620-7742(200105)329:5<363:FFAMIL>2.0.ZU;2-Y
Abstract
We show how Favre density-weighted filtering, used with a macro-temperature , simplifies considerably the formalism of large-eddy simulations in compre ssible turbulence. The method gives good results for a plane channel at Mac h 0.3, and a transonic flow above a rectangular cavity. In both cases, the shedding of Lambda -shaped coherent vortices is very well characterized tha nks to positive iso-surfaces of Q, the velocity-gradient tenser second inva riant. (C) 2001 Academie des sciences/Editions scientifiques et medicales E lsevier SAS.