Calculations of two-fluid linear response to non-axisymmetric fields in tokamaksa)
Calculations of two-fluid linear response to non-axisymmetric fields in tokamaksa)
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DOI：
10.1063/1.3694657
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发表时间：
2012-03
影响因子：
2.2
通讯作者：
N. Ferraro
中科院分区：
文献类型：
--
作者：
N. Ferraro
零频率线性等离子体响应静态施加非轴对称场的计算使用电阻性双流体模型转向，环形几何形状。在这个模型中，等离子体响应的电阻率，旋转，微分离子和电子的速度，和耗散的影响进行了探讨。旋转一般被发现抑制在等离子体中的岛屿的形成，在定性与理论结果一致。当两种流体的影响，它被发现的非轴对称领域的渗透一般是最大的电子旋转垂直于平衡磁场的部分是小的模式合理的表面。强旋转剪切的边缘被发现，以增强等离子体响应。整个等离子体，包括分界线和刮除层，包括在计算域。
The zero-frequency linear plasma response to static applied non-axisymmetric fields is calculated using a resistive two-fluid model in diverted, toroidal geometry. Within this model, the effects on the plasma response of resistivity, rotation, differential ion and electron velocity, and dissipation are explored. Rotation is generally found to inhibit the formation of islands in the plasma, in qualitative agreement with theoretical results. When two-fluid effects are included, it is found that the penetration of the non-axisymmetric fields is generally greatest when the part of the electron rotation perpendicular to the equilibrium magnetic field is small at the mode-rational surface. Strong rotation shear in the edge is found to enhance the plasma response there. The entire plasma, including the separatrix and scrape-off layer, is included in the computational domain.