Bursting events in zonal flow-drift wave turbulence

被引：8

作者：

Manfredi, G

Roach, CM

机构：

[1] Univ H Poincare, Lab Phys Milieux Ionises & Applicat, CNRS, F-54506 Vandoeuvre Les Nancy, France

[2] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon, Oxon, England

来源：

PHYSICS OF PLASMAS | 2003年 / 10卷 / 07期

关键词：

D O I：

10.1063/1.1581284

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 zonal flows and their interplay with drift wave turbulence is studied numerically using a model based on the Hasegawa-Mima equation, with an electron response depending only on the fluctuating part of the electrostatic potential. In regimes dominated by the diamagnetic velocity, large-amplitude nonlinear oscillations are observed in the time history of the zonal flow and drift wave spectra. Such oscillations have also recently been detected in toroidal gyrokinetic simulations, and could be important in determining the transport behavior in experimental devices. (C) 2003 American Institute of Physics.

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页码：2824 / 2830

页数：7

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