Two-dimensional resistive MHD simulation of the optimized plasma formation in the spherical tokamaks
Two-dimensional resistive MHD simulation of the optimized plasma formation in the spherical tokamaks
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球形托卡马克中优化等离子体形成的二维电阻 MHD 模拟
DOI：
10.1088/1741-4326/abebce
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发表时间：
2021
期刊：
影响因子：
3.3
通讯作者：
Hiroshi Tanabe and Yasushi Ono
中科院分区：
文献类型：
--
作者：
Tara Ahmadi;Hiroshi Tanabe and Yasushi Ono
本文给出了球形托卡马克优化启动方案的二维全局MHD模拟结果，以最大化由合并启动过程中极向私有通量值决定的离子加热能量。这一系列的模拟成功地揭示了在一定磁能下，极向私有磁通与容器内极向线圈分离长度的关系。内部线圈的径向和方位位置需要优化，以最大限度地提高私有通量，从而提高离子加热能量。在双极向场（PF）线圈系统中，随着线圈间距的增加，私有磁通和离子加热能量增加。安装两个额外的PF线圈可以显著提高私有磁通，即使线圈的分离长度很短。
We present 2D global MHD simulation results of the optimized start-up scenarios for the spherical tokamak to maximize the ion heating energy determined by the value of the poloidal private flux during the merging start-ups. The series of simulations has successfully revealed the dependence of the poloidal private flux on the in-vessel poloidal coils' separation length under the fixed amount of coils' magnetic energy. The radial and azimuthal locations of the internal coils need to be optimized to maximize high private flux and consequently high ion heating energy. In the case of a two poloidal field (PF) coils system, the private flux and ion heating energy increase with the coils' separation length. Installing two additional PF coils improves the private flux significantly, even if the coils' separation length is short.