TEMPORAL SCALING BEHAVIOR OF DECAYING 2-DIMENSIONAL TURBULENCE

被引：133

作者：

WEISS, JB

MCWILLIAMS, JC

机构：

来源：

PHYSICS OF FLUIDS A-FLUID DYNAMICS | 1993年 / 5卷 / 03期

关键词：

D O I：

10.1063/1.858647

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Decaying two-dimensional turbulence is characterized by the emergence of coherent vortices, which subsequently dominate the evolution. The temporal scaling behavior of the flow is analyzed using a scaling theory, a long-time integration of the fluid equations, and a dissipative, modified point-vortex model that represents the turbulence as a system of interacting coherent structures. Good agreement is found in the behavior of average vortex properties, low-order moments of the flow fields, and the form of self-similar evolution.

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页码：608 / 621

页数：14

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