期刊论文

中文

核技术

0253-3219

2015

38

10

100602-1-100602-5

10.11889/j.0253-3219.2015.hjs.38.100602

国家自然科学基金（No.11105071;No.11375085;No.11475083;No.41104094;No.11405082）； 南华大学核聚变与等离子体物理创新团队（No.NHXTD03）资助；

本校为第一机构

采用理想磁流体力学模型,利用绝热近似方法,推导出托卡马克等离子体极向转动体系中带状流的色散方程,分析了极向转动对带状流产生的影响。结果表明,等离子体极向转动体系下,测地声模频率和声波频率都会随极向转动马赫数而增大。带状流的频率与采用等温近似时有一定的数值差别;测地声模的密度扰动量形式也发生变化,由静态体系中纯驻波的形式,变为由一个驻波和一个小振幅行波叠加的形式。

Background: Zonal flows are the electrostatic modes with structures of toroidal symmetry and poloidal symmetry, which play an important role in restraining turbulences. In the process of turbulence suppression, the poloidal rotation widely exists in tokamak plasmas. Purpose: In this study, the effects of the poloidal rotation on zonal flows in tokamak plasmas are concluded. Methods: With the dispersion relation derived by using ideal MHD model with the adiabatic approximation, the frequencies of zonal flows are deduced. Results: Firstly, the fr...