Lagrangian Acceleration Statistics in 2D and 3D Turbulence

被引：0

作者：

Kamps, Oliver ^{[1
]}

Wilczek, Michael ^{[2
]}

Friedrich, Rudolf ^{[2
]}

机构：

[1] Univ Munster, Ctr Nonlinear Sci, Munster, Germany

[2] Univ Munster, Inst Theoret Phys, Munster, Germany

来源：

PROGRESS IN TURBULENCE AND WIND ENERGY IV | 2012年 / 141卷

关键词：

CASCADE;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this paper we compare Lagrangian statistical quantities in the direct energy cascade of three-dimensional turbulence and the corresponding observables for the case of the inverse energy cascade in two dimensions. We focus on the acceleration of a tracer particle along its trajectory. Interpreting the acceleration as a stochastic process we show that for both systems the Markov time scale, which is an indicator for the length of the memory of a stochastic process, is in the order of magnitude of the Lagrangian integral time scale.

引用

页码：67 / 70

页数：4

共 5 条

[1] Inverse energy cascade in two-dimensional turbulence: Deviations from Gaussian behavior [J].