Effect of anisotropic thermal transport on the resistive plasma response to resonant magnetic perturbation field
Effect of anisotropic thermal transport on the resistive plasma response to resonant magnetic perturbation field
复制标题
DOI：
10.1063/1.5003664
复制
发表时间：
2017-09
影响因子：
2.2
通讯作者：
X. Bai;Yueqiang Liu;Zhe Gao
中科院分区：
文献类型：
--
作者：
X. Bai;Yueqiang Liu;Zhe Gao
采用扩展的环形流体模型数值研究了等离子体对共振磁微扰（RMP）场的响应，该模型考虑了平行于和垂直于总磁场的各向异性热输运物理。热传输被发现是有效的，在消除环形平均曲率引起的等离子体屏蔽（所谓的Glasser-Green-约翰逊，GGJ屏蔽）在一个缓慢的环形流制度，而在更快的流量修改传统的等离子体屏蔽制度的影响较小。这种热输运和GGJ屏蔽相互作用的物理效应是由于等离子体对外加场的响应导致屏蔽电流径向结构的改变。等离子体响应（屏蔽电流，响应场，等离子体位移和扰动速度）的修改也有直接的后果上的环向力矩产生的RMP。模拟结果表明，热输运降低了反应器的温度。
Plasma response to the resonant magnetic perturbation (RMP) field is numerically investigated by an extended toroidal fluid model, which includes anisotropic thermal transport physics parallel and perpendicular to the total magnetic field. The thermal transport is found to be effective in eliminating the toroidal average curvature induced plasma screening (the so called Glasser-Green-Johnson, GGJ screening) in a slow toroidal flow regime, whilst having minor effect on modifying the conventional plasma screening regimes at faster flow. This physics effect of interaction between thermal transport and GGJ screening is attributed to the modification of the radial structure of the shielding current, which resulted from the plasma response to the applied field. The modification of the plasma response (shielding current, response field, plasma displacement, and the perturbed velocity) also has direct consequence on the toroidal torques produced by RMP. Modelling results show that thermal transport reduces the re...