Abstract: Degrazia et al. (2005) has recently proposed a turbulent subfilter viscosity for large eddy simulation (LES) models, based on Heisenberg´s mechanism of energy transfer. Such development shows that Heisenberg´s theory naturally establishes a physical criterium that connects the subgrid terms to the large-scale dimensions of the system. The present paper is a numerical investigation of such physical constrain, where a LES code (Moeng, 1984) is employed. Our results confirm the theoretical statement derived for LES models.

References:

G.A. Degrazia, J.C. Carvalho, A.G. Goulart, O.C. Acevedo, U. Rizza, D.M. Moreira, H.F. de Campos Velho (2005): Employing Heisenberg's Turbulent Spectral Transfer Theory to Parameterize Sub-filter Scales in LES Models, New Journal of Physics (NJP) - submitted.

C-H., Moeng (1984): A Large-Eddy Simulation model for the study of planetary boundary-layer turbulence, Journal of the Atmospheric Sciences, 41, 2052-2062.