INTERMITTENCY AND NON-GAUSSIAN STATISTICS IN TURBULENCE

被引：45

作者：

SHE, ZS

机构：

[1] Program in Applied and Computational Mathematics, Princeton University, Princeton

来源：

FLUID DYNAMICS RESEARCH | 1991年 / 8卷 / 1-4期

关键词：

D O I：

10.1016/0169-5983(91)90039-L

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Intermittency effects in turbulence are discussed from a dynamical point of view. A two-fluid model is developed to describe quantitatively the non-gaussian statistics of turbulence at small scales. With a self-similarity argument, the model gives rise to the entire set of inertial range scaling exponents for normalized velocity structure functions. The results are in excellent agreement with experimental and numerical measurements. The model suggests a physical mechanism of intermittency, namely the self-interaction of turbulence structures.

引用

页码：143 / 158

页数：16

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