VORTICAL SCALES FOR 2-DIMENSIONAL AND 3-DIMENSIONAL TURBULENCE

被引:7
|
作者
NOVIKOV, EA
机构
[1] Institute for Nonlinear Science, 0402, University of California, San Diego
来源
PHYSICAL REVIEW E | 1994年 / 49卷 / 02期
关键词
D O I
10.1103/PhysRevE.49.R975
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Correlation analysis of two-dimensional (2D) turbulence is performed on the basis of the Navier-Stokes equations. It is found that within the inertial range of scales (L Re-1/2 much less than r much less than L; L is the external scale, Re is the Reynolds number) there is a physically distinguished scale l(c) = L Re-1/4-a natural scale for coherent vortex patches. A hierarchy of vortical scales for 2D and 3D turbulence is found from a co-variance analysis of more detailed spatial structure of the vorticity field.
引用
收藏
页码:R975 / R977
页数:3
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