摘要
本文从电阻率梯度驱动的托卡马克边缘湍流理论模型出发,通过数值计算方法,观察了这一湍流随时间演变的过程。研究了湍流发展的物理本质,进一步探明了欧姆耗散效应在湍流发展过程中的作用。发现了它对湍流饱和时间的延缓现象,尤其是在高密度托卡马克装置上,欧姆效应明显地降低了各涨落量的饱和水平。
The tokamak edge turbulence which contains resistivity and impurity gradients and impurity radiation driven sources is studied numerically. The effect of ohmic dissipation on the evolution and saturation of this turbulence is investigated. The ohmic effect drops the saturation levels of fluctuations efficiently in high density tokamaks(such as Alcator), indi-cating that the ohmic effect plays an important role in the evolution of tokamak edge turbu-lence in high density devices.
出处
《核聚变与等离子体物理》
CAS
CSCD
北大核心
1993年第3期9-15,共7页
Nuclear Fusion and Plasma Physics
关键词
边缘
湍流
欧姆耗散
托卡马克装置
Edge turbulence
Resonance broadening
Ohmic dissipation