RELAXATION OF 2D TURBULENCE TO A METAEQUILIBRIUM NEAR THE MINIMUM ENSTROPHY STATE

被引：150

作者：

HUANG, XP ^{[1
]}

DRISCOLL, CF ^{[1
]}

机构：

[1] UNIV CALIF SAN DIEGO,INST PURE & APPL PHYS SCI,LA JOLLA,CA 92093

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.72.2187

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Relaxation of 2D turbulence has been measured in magnetized electron columns, which follow the same (r, theta) dynamics as 2D incompressible fluids. The turbulence arises from shear instabilities on initially hollow columns, then relaxes to long-lasting, axisymmetric metaequilibria. The measured metaequilibrium vorticity profiles are in close agreement with the minimum enstrophy vortices predicted by the ''selective decay'' hypothesis.

引用

页码：2187 / 2190

页数：4

共 23 条

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