Local shear in general magnetic stellarator geometry
Local shear in general magnetic stellarator geometry
复制标题
一般磁仿星器几何结构中的局部剪切
DOI：
10.1063/1.860754
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
A. Boozer
中科院分区：
文献类型：
--
作者：
R. Waltz;A. Boozer
在广义磁坐标系下，建立了仿星器中冷离子静电漂移波问题的非线性气球模型。结果表明，局部涟漪剪切，而不是全球平均剪切，径向本地化的微湍流模式，位于沿着场线的局部涟漪曲率威尔斯井。有人认为，仿星器中的微湍流主要取决于当地的涟漪剪切和曲率，而可能是不敏感的全球（或平均）剪切和曲率。
A nonlinear ballooning mode formulation in general magnetic coordinates is developed for the cold ion electrostatic drift wave problem in stellarators. It is shown that local ripple shear, not global average shear, radially localizes microturbulent modes which are located along the field lines by local ripple curvature wells. It is argued that microturbulence in stellarators depends dominantly on local ripple shear and curvature and may be rather insensitive to global (or average) shear and curvature.