Richardson pair dispersion in two-dimensional turbulence

被引：139

作者：

Jullien, MC ^{[1
]}

Paret, J ^{[1
]}

Tabeling, P ^{[1
]}

机构：

[1] Ecole Normale Super, Lab Phys Stat, F-75231 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.82.2872

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first experimental study of the dispersion of pairs of passive particles, performed in a controlled two-dimensional turbulent flow, in which Kolmogorov-Kraichnan Scaling E(k) similar to k(-5/3) holds. The Richardson t(3) law is observed, and strongly non-Gaussian behavior is obtained for the Lagrangian distributions of separations. The process is shown to be isotropic, and self-similar in time. The observations, which fit well in the Kolmogorov framework, jeopardize the relevance of the Levy walk approach. [S0031-9007(99)08856-0].

引用

页码：2872 / 2875

页数：4

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