ION TEMPERATURE-GRADIENT DRIVEN TURBULENCE IN THE WEAK DENSITY GRADIENT LIMIT

被引:14
作者
HAMAGUCHI, S [1 ]
HORTON, W [1 ]
机构
[1] UNIV TEXAS,INST FUS STUDIES,AUSTIN,TX 78712
来源
PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1990年 / 2卷 / 12期
关键词
D O I
10.1063/1.859371
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 anomalous heat transport arising from the ion temperature gradient driven mode or ηi-mode turbulence is extended to the range of the weak density gradient limit (ηi = Ln/ L T→ ∞ ), which is appropriate for H-mode dishcarges. It is shown that the anomalous ion heat conductivity χi with L n→ ∞ scales as χi = g(ρs/ LT) (cTi/eB) exp( - βσ) with σ = (T e/Ti) (LT/Ls), β≃4, and g≃1. This χi scaling is the natural extension for high ηi of the scaling of χi for K = (T i/Te) (1 + ηi) ≲ 4 obtained [Phys. Fluids B 2, 1833 (1990)] from analytical and numerical studies. © 1990 American Institute of Physics.
引用
收藏
页码:3040 / 3046
页数:7
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