Turbulent transport reduction by zonal flows: Massively parallel simulations

被引：947

作者：

Lin, Z ^{[1
]}

Hahm, TS ^{[1
]}

Lee, WW ^{[1
]}

Tang, WM ^{[1
]}

White, RB ^{[1
]}

机构：

[1] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

来源：

SCIENCE | 1998年 / 281卷 / 5384期

关键词：

D O I：

10.1126/science.281.5384.1835

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Three-dimensional gyrokinetic simulations of microturbulence in magnetically confined toroidal plasmas with massively parallel computers showed that, with Linear flow damping, an asymptotic residual flow develops In agreement with analytic calculations. Nonlinear global simulations of instabilities driven by temperature gradients in the ion component of the plasma support the view that turbulence-driven fluctuating zonal flows can substantially reduce turbulent transport. Finally, the outstanding differences in the flow dynamics observed in global and Local simulations are found to be due to profile variations.

引用

页码：1835 / 1837

页数：3

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