COHERENT STRUCTURES IN ETA-I-MODE TURBULENCE

被引：28
|
作者：
HONG, BG [1 ]
ROMANELLI, F [1 ]
OTTAVIANI, M [1 ]
机构：
[1] EURATOM,ENEA FUS,CTR RIC ENERGIA FRASCATI,I-00044 FRASCATI,ITALY
来源：
PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1991年 / 3卷 / 03期
关键词：
D O I：
10.1063/1.859860
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：
Numerical simulations of the ion-temperature-gradient-driven mode (eta-i- mode) show that long-lived, large-scale coherent structures exist and play an important role in the study of the anomalous transport. In this work, the stationary solutions of the nonlinear equations describing the dynamics of the eta-i-mode are investigated. The simplest solution is found to be a dipolar vortex in the shearless case. In the presence of the magnetic shear, a modified dipolar vortex solution is found through perturbation theory.
引用
收藏
页码：615 / 619
页数：5
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