Turbulence spreading in reversed shear plasmas

被引：35
|
作者：
Yagi, M. [1 ]
Ueda, T.
Itoh, S-I
Azumi, M.
Itoh, K.
Diamond, P. H.
Hahm, T. S.
机构：
[1] Kyushu Univ, Appl Mech Res Inst, Fukuoka, Japan
[2] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Fukuoka, Japan
[3] Univ Calif San Diego, La Jolla, CA 92093 USA
[4] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08544 USA
来源：
PLASMA PHYSICS AND CONTROLLED FUSION | 2006年 / 48卷
关键词：
D O I：
10.1088/0741-3335/48/5A/S42
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：
Turbulence spreading in reversed shear plasmas is investigated using a simple, multi-fluid model of ITG turbulence in toroidal geometry. The temperature profile modification is accompanied by avalanche processes. In addition, it is found that the turbulence spreads inwards and outwards, owing to the nonlinear interactions of turbulence. Analysis of the simulation results indicates that the spatio-temporal propagation of the turbulence front is quantitatively consistent with the scaling of speed predicted by the Fisher front theory.
引用
收藏
页码：A409 / A418
页数：10
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