Subgrid-scale modeling with a variable length scale
- 1 July 1989
- journal article
- conference paper
- Published by AIP Publishing in Physics of Fluids A: Fluid Dynamics
- Vol. 1 (7) , 1293-1295
- https://doi.org/10.1063/1.857357
Abstract
Length scale variation in subgrid-scale (SGS) modeling is studied using the results from a two-scale direct-interaction approximation. The length scale variation is generated by the advection of SGS eddies by grid-scale ones. This effect leads to the variation of a characteristic SGS length scale around the filter width in the Smagorinsky model. The present model shows that the usual Smagorinsky constant is not a universal constant in large eddy simulation of various types of turbulence.Keywords
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