Subgrid-scale stress modelling based on the square of the velocity gradient tensor

Authors
Nicoud, F Ducros, F
Citation
F. Nicoud et F. Ducros, Subgrid-scale stress modelling based on the square of the velocity gradient tensor, FLOW TURB C, 62(3), 1999, pp. 183-200
Citations number
24
Categorie Soggetti
Mechanical Engineering
Journal title
FLOW TURBULENCE AND COMBUSTION
ISSN journal
13866184 → ACNP
Volume
62
Issue
3
Year of publication
1999
Pages
183 - 200
Database
ISI
SICI code
1386-6184(1999)62:3<183:SSMBOT>2.0.ZU;2-X
Abstract
A new subgrid scale model is proposed for Large Eddy Simulations in complex geometries. This model which is based on the square of the velocity gradie nt tensor accounts for the effects of both the strain and the rotation rate of the smallest resolved turbulent fluctuations. Moreover it recovers the proper y(3) near-wall scaling for the eddy viscosity without requiring dyna mic procedure. It is also shown from a periodic turbulent pipe flow computa tion that the model can handle transition.