Non-linear magnetohydrodynamic modeling of plasma response to resonant magnetic perturbations
Non-linear magnetohydrodynamic modeling of plasma response to resonant magnetic perturbations
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DOI：
10.1063/1.4824820
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发表时间：
2013-10
影响因子：
2.2
通讯作者：
F. Orain;M. Becoulet;G. Dif-Pradalier;Gta Guido Huijsmans;S. Pamela;E. Nardon;C. Passeron;G. Latu-G.-L
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文献类型：
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作者：
F. Orain;M. Becoulet;G. Dif-Pradalier;Gta Guido Huijsmans;S. Pamela;E. Nardon;C. Passeron;G. Latu-G.-L
静态共振磁微扰(RMPs)与等离子体流的相互作用采用非线性电阻MHD程序JOREK在环形几何中模拟，该程序包括X点和刮离层。模型中引入了双流体抗磁效应、新经典的极向摩擦和环形旋转源来描述真实的等离子体流动。在考虑这些流动和径向电场演化影响的情况下，对RMP侵彻进行了自洽研究。在建模中使用了喷气式、桅杆和ITER参数。对于类喷流参数，等离子体响应的三个区域取决于等离子体的电阻率和反磁旋转：在高电阻率和慢旋转时，RMP在边缘共振面产生的孤岛沿离子反磁方向旋转，其大小振荡。在较快的旋转速度下，产生的孤岛是静态的，更多地被等离子体屏蔽。一个带有静态岛屿的中间政权，它将……
The interaction of static Resonant Magnetic Perturbations (RMPs) with the plasma flows is modeled in toroidal geometry, using the non-linear resistive MHD code JOREK, which includes the X-point and the scrape-off-layer. Two-fluid diamagnetic effects, the neoclassical poloidal friction and a source of toroidal rotation are introduced in the model to describe realistic plasma flows. RMP penetration is studied taking self-consistently into account the effects of these flows and the radial electric field evolution. JET-like, MAST, and ITER parameters are used in modeling. For JET-like parameters, three regimes of plasma response are found depending on the plasma resistivity and the diamagnetic rotation: at high resistivity and slow rotation, the islands generated by the RMPs at the edge resonant surfaces rotate in the ion diamagnetic direction and their size oscillates. At faster rotation, the generated islands are static and are more screened by the plasma. An intermediate regime with static islands which sl...