Abstract
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.
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© 2004 Springer Science+Business Media Dordrecht
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Moser, R.D., Zandonade, P. (2004). Development of High Reynolds Number Optimal Les Models. In: Smits, A.J. (eds) IUTAM Symposium on Reynolds Number Scaling in Turbulent Flow. Fluid Mechanics and its Applications, vol 74. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0997-3_29
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DOI: https://doi.org/10.1007/978-94-007-0997-3_29
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