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ASSESSMENT OF MULTISCALE MODELS FOR LES: SPECTRAL BEHAVIOUR IN VERY HIGH REYNOLDS NUMBER TURBULENCE AND CASES WITH AIRCRAFT WAKE VORTICES.

Laurent Bricteux
Mechanical Engineering Department, Division TERM, also Center for Systems Engineering and Applied Mechanics (CESAME) Universite catholique de Louvain (UCL) Louvain-la-Neuve, Belgium

Roger Cocle
Mechanical Engineering Department, Division TERM, also Center for Systems Engineering and Applied Mechanics (CESAME) Universite catholique de Louvain (UCL) Louvain-la-Neuve, Belgium

Matthieu Duponcheel
Mechanical Engineering Department, Division TERM, also Center for Systems Engineering and Applied Mechanics (CESAME) Universite catholique de Louvain (UCL) Louvain-la-Neuve, Belgium

Laurent Georges
Center for Research in Aeronautics (CENAERO), Gosselies, Belgium

Gregoire Winckelmans
Mechanical Engineering Department, Division TERM, also Center for Systems Engineering and Applied Mechanics (CESAME) Universite catholique de Louvain (UCL) Louvain-la-Neuve, Belgium

要約

The aim of this study is to compare several subgrid scale (SGS) models in terms of their ability to correctly dissipate energy for LES at high Reynolds number, with a good spectral behavior. We consider first homogeneous isotropic turbulence (HIT), then more complex flows involving large vortical structures: aircraft wake vortices interacting with turbulence, and aircraft wake vortices interacting with a ground. The performance of the SGS models used is assessed for each of these flows.