Intermittency in passive scalar advection

被引：107

作者：

Frisch, U

Mazzino, A

Vergassola, M

机构：

[1] Observ Cote Azur, CNRS, F-06304 Nice 4, France

[2] Univ Genoa, Dipartimento Fis, INFM, I-16146 Genoa, Italy

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.80.5532

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A Lagrangian method for the numerical simulation of the Kraichnan passive scalar model is introduced. The method is based on Monte Carlo simulations of tracer trajectories, supplemented by a point-splitting procedure for coinciding points. Clean scaling behavior for scalar structure functions is observed. The scheme is exploited to investigate the dependence of scalar anomalies on the scaling exponent xi of the advecting velocity field. The three-dimensional fourth-order structure function is specifically considered.

引用

页码：5532 / 5535

页数：4

共 19 条

[1] Three-point correlation function of a scalar mixed by an almost smooth random velocity field [J].