NONLINEAR SELF-SUSTAINED DRIFT-WAVE TURBULENCE

被引：62

作者：

DRAKE, JF

ZEILER, A

BISKAMP, D

机构：

[1] Max-Planck-Institut für Plasmaphysik

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.75.4222

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Numerical simulations of 3D collisional drift-wave turbulence in a sheared magnetic field are presented which demonstrate that fluctuations are self-sustaining even though the linear eigenmodes of the system are all damped. An analytic calculation reveals that the sourer of the turbulence is a nonlinear streaming instability in which radial flows extract energy from the ambient density gradient and drive drift waves which then amplify the radial flow.

引用

页码：4222 / 4225

页数：4

共 11 条

[1] STABILITY OF BOUND EIGENMODE SOLUTIONS FOR COLLISIONLESS UNIVERSAL INSTABILITY [J].