THE DYNAMICS OF VORTICITY TUBES IN HOMOGENEOUS TURBULENCE

被引：228

作者：

VINCENT, A

MENEGUZZI, M

机构：

[1] UNIV MONTREAL,DEPT PHYS,MONTREAL H3C 3J7,PQ,CANADA

[2] CERFACS,F-31057 TOULOUSE,FRANCE

来源：

JOURNAL OF FLUID MECHANICS | 1994年 / 258卷

关键词：

D O I：

10.1017/S0022112094003319

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Analysis of data from a direct simulation of statistically steady homogeneous turbulence suggests that the vorticity tubes, which constitute the main structure of the vorticity field, are produced by shear instabilities. This is confirmed by a decay calculation, in which vorticity sheets appear at first, and then roll up to form the first tubes. These instabilities seem to be at least as important as vortex stretching in transferring energy from large to small scales.

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页码：245 / 254

页数：10

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