Subgrid-scale modeling with a variable length scale
- 1 July 1989
- journal article
- 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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