THE INTERACTION BETWEEN THE MEAN FLOW AND COHERENT STRUCTURES IN TURBULENT MIXING LAYERS

被引：9

作者：

COHEN, J ^{[1
]}

MARASLI, B ^{[1
]}

LEVINSKI, V ^{[1
]}

机构：

[1] UNIV MARYLAND,DEPT MECH ENGN,COLL PK,MD 20742

来源：

JOURNAL OF FLUID MECHANICS | 1994年 / 260卷

关键词：

D O I：

10.1017/S0022112094003447

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The nonlinear interaction between the mean flow and a coherent disturbance in a two-dimensional turbulent mixing layer is addressed. Based on considerations from stability theory, previous experimental results, in particular the modification of the mean velocity profile, the peculiar growth of the forced shear-layer thickness and the spatial growth of the disturbance amplitude, are explained. A model that assumes a quasi-parallel mean flow having a self-similar mean velocity profile is developed. The model is capable of predicting the downstream evolution of turbulent mixing layers subjected to external excitations.

引用

页码：81 / 94

页数：14

共 21 条

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