Lagrangian statistics in forced two-dimensional turbulence

被引：14

作者：

Kamps, O. ^{[1
]}

Friedrich, R. ^{[1
]}

机构：

[1] Univ Munster, Inst Theoret Phys, D-48149 Munster, Germany

来源：

PHYSICAL REVIEW E | 2008年 / 78卷 / 03期

关键词：

D O I：

10.1103/PhysRevE.78.036321

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：

We report on simulations of two-dimensional turbulence in the inverse energy cascade regime. Focusing on the statistics of Lagrangian tracer particles, scaling behavior of the probability density functions of velocity fluctuations is investigated. The results are compared to the three-dimensional case. In particular an analysis in terms of compensated cumulants reveals the transition from a strong non-Gaussian behavior with large tails to Gaussianity. The reported computation of correlation functions for the acceleration components sheds light on the underlying dynamics of the tracer particles.

引用

页数：5

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