Universal velocity profile for coherent vortices in two-dimensional turbulence

被引：11

作者：

Chertkov, M. ^{[1
,2
]}

Kolokolov, I. ^{[1
,2
,3
]}

Lebedev, V. ^{[1
,2
,3
]}

机构：

[1] LANL, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA

[2] LANL, Div Theoret, Los Alamos, NM 87545 USA

[3] LD Landau Theoret Phys Inst, Moscow 119334, Russia

来源：

PHYSICAL REVIEW E | 2010年 / 81卷 / 01期

基金：

美国国家科学基金会;

关键词：

INVERSE ENERGY CASCADE;

D O I：

10.1103/PhysRevE.81.015302

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：

Two-dimensional turbulence generated in a finite box produces large-scale coherent vortices coexisting with small-scale fluctuations. We present a rigorous theory explaining the eta=1/4 scaling in the V proportional to r(-n) law of the velocity spatial profile within a vortex, where r is the distance from the vortex center. This scaling, consistent with earlier numerical and laboratory measurements, is universal in its independence of details of the small-scale injection of turbulent fluctuations and details of the shape of the box.

引用

页数：4

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