COMMENT ON THE DISSIPATION-RANGE SPECTRUM IN TURBULENT FLOWS

被引：25

作者：

SANADA, T

机构：

[1] Institute of Computational Fluid Dynamics, Meguro-ku, Tokyo 152

来源：

PHYSICS OF FLUIDS A-FLUID DYNAMICS | 1992年 / 4卷 / 05期

关键词：

D O I：

10.1063/1.858263

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Recently, Smith and Reynolds [Phys. Fluids A 3, 992 (1991)] suggested that the turbulent energy spectrum with exponential decaying form E(k) = C(K)epsilon-2/3k-5/3 exp(-sigma-k) (C(K) is Kolmogorov constant, epsilon is the energy dissipation rate, and sigma is some constant) may be a poor model, because it does not give velocity derivative skewness in good agreement with experimental value. On the other hand, some direct numerical simulations of the Navier-Stokes equation demonstrate the above exponential form in the dissipation range. This disagreement is resolved by considering a model spectrum based on direct numerical simulation.

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页码：1086 / 1087

页数：2

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