期刊论文

Numerical Study on Suppression of Radio Frequency Wave Current Drive on Double Tearing Modes Instability

Li, Xin-Xia(leexinxia@126.com)

中文

原子能科学技术

1000-6931

2017

51

4

597-602

10.7538/yzk.2017.51.04.0597

2014GB108002:国际热核聚变实验堆计划专项 11375085,11347002:国家自然科学基金 2016JJ2105:湖南省自然科学基金 NHXTD03:南华大学核聚变与等离子体物理创新团队建设项目

本校为第一且通讯机构

采用不可压缩磁流体模型,在圆柱位形下研究了射频波电流驱动对双撕裂模不稳定性的影响。结果表明,托卡马克装置中沉积在有理面上的同向驱动电流能有效减缓3/1双撕裂模的发展。电流驱动幅值约占等离子体电流初始值的4%、驱动电流沉积宽度约为小环半径的7%时,抑制效果较好。此外,研究表明,在双撕裂模进入快速增长阶段前加入外部驱动电流,才能有效抑制撕裂模的磁爆发。

Controlling double tearing modes instability by radio frequency (RF) wave current drive was explored by using numerical simulation with incompressible magnetohydrodynamics (MHD) in a periodic cylinder. The results show that a localized driven current along the background current direction on rational surfaces in Tokamak device has a suppression effect on the 3/1 double tearing modes instability, and the optimal initial localized driven current is current with Icd=4%I and δcd=0.07a. In addition, only when the localized driven current is injected before the fast growth stage, the double te...