Gyrokinetic study of the edge shear layer
Gyrokinetic study of the edge shear layer
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DOI：
10.1088/0741-3335/48/5a/s39
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发表时间：
2006-05
影响因子：
2.2
通讯作者：
B. Scott
中科院分区：
文献类型：
--
作者：
B. Scott
最初为核心湍流制定的 delta-f 回旋模型已扩展到处理现代托卡马克跨碰撞边缘区域中预期的中幅度电磁湍流。遵循电子和离子以及场极化方程。研究了外部施加的 E × B 速度切变以及湍流可能产生反作用的初始 E × B 涡度剖面对湍流的影响。施加的剪切减少了短波长分量，但增加了长波长。局域涡度层具有更普遍的抑制作用。
The delta-f gyrokinetic model originally formulated for core turbulence is extended to treat medium-amplitude electromagnetic turbulence expected in the transcollisional edge regions of modern tokamaks. Both electrons and ions, and the field polarization equations, are followed. The effect on the turbulence of an externally applied E × B velocity shear and alternatively an initial E × B vorticity profile to which the turbulence can back-react are studied. Imposed shear reduces the short wavelength component but increases the long wavelengths. The localized vorticity layer has a more general suppressive effect.