SHEAR-FLOW GENERATION BY DRIFT ROSSBY WAVES

被引:18
作者
GUZDAR, PN
机构
[1] Institute for Plasma Research, University of Maryland, College Park
关键词
D O I
10.1063/1.871042
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
The generation of shear flow driven by a large amplitude drift wave, represented by the Hasegawa-Mima-Charney (HMC) equation, has been investigated. It is shown that, besides a finite amplitude threshold for the shear flow instability to occur, there is also a necessary condition on the aspect ratio of the large amplitude drift wave, due to conservation of the average potential vorticity, that needs to be satisfied. A comprehensive comparison of the shear-flow instability criterion for the HMC equation and the incompressible, invisicid, hydrodynamic equation has been undertaken. (C) 1995 American Institute of Physics.
引用
收藏
页码:4174 / 4176
页数:3
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