Isotropy vs anisotropy in small-scale turbulence

被引：50

作者：

Biferale, L

Vergassola, M

机构：

[1] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

[2] Univ Roma Tor Vergata, INFM, I-00133 Rome, Italy

[3] Observ Cote Azur, F-06304 Nice, France

来源：

PHYSICS OF FLUIDS | 2001年 / 13卷 / 08期

关键词：

D O I：

10.1063/1.1381019

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The decay of large-scale anisotropies in small-scale turbulent flow is investigated. By introducing two different kinds of estimators we discuss the relation between the presence of a hierarchy for the isotropic and the anisotropic scaling exponents and the persistence of anisotropies. By direct measurements on a channel flow numerical simulation we show that the presence of a hierarchy for the isotropic and the anisotropic scaling exponent is not in contradiction with the persistence of anisotropies at small scales. (C) 2001 American Institute of Physics.

引用

页码：2139 / 2141

页数：3

共 22 条

[1] Persistence of small-scale anisotropies and anomalous scaling in a model of magnetohydrodynamics turbulence [J].