Intermittent dissipation of a passive scalar in turbulence

被引：63

作者：

Chertkov, M ^{[1
]}

Falkovich, G

Kolokolov, I

机构：

[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[2] Weizmann Inst Sci, IL-76100 Rehovot, Israel

[3] Inst Adv Study, Princeton, NJ 08540 USA

[4] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.80.2121

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The probability density function (PDF) of passive scalar dissipation P(epsilon) is found analytically in the limit of large Peclet and Prandtl numbers (Batchelor-Kraichnan regime) in two dimensions. The tail of PDF at epsilon >> [epsilon] is shown to be stretched exponent ln P(epsilon) proportional to epsilon(1/3); at epsilon << [epsilon], P proportional to 1/root epsilon.

引用

页码：2121 / 2124

页数：4