Development of High Reynolds Number Optimal Les Models

  • R. D. Moser
  • P. Zandonade
Conference paper
Part of the Fluid Mechanics and its Applications book series (FMIA, volume 74)


The well-known goal of large-eddy simulation (LES) is to simulate high- Reynolds number turbulent flows, without resolving the dissipative scales. This requires a model for the unresolved scales, and the primary challenge of LES is the development of such models. A wide variety of LES models have been used in a range of flows, with varying success (Meneveau and Katz, 2000; Lesieur and Metáis, 1996). Recently, a new approach to the development of such models was proposed, called optimal LES. It is based on formal approximations to a well defined ideal LES evolution (Langford and Moser, 1999). The ideal LES has provably good properties, such as correct single-time statistics and minimum variance from the evolution of filtered turbulence, but unfortunately, the ideal LES model is impractical to determine.


Direct Numerical Simulation High Reynolds Number Stochastic Estimation Isotropic Turbulence Dissipative Scale 
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Copyright information

© Springer Science+Business Media Dordrecht 2004

Authors and Affiliations

  • R. D. Moser
    • 1
  • P. Zandonade
    • 1
  1. 1.University of Illinois at Urbana-Champaign ChampaignChampaignUSA

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