A BOUT++ extension for full annular tokamak edge MHD and turbulence simulations
A BOUT++ extension for full annular tokamak edge MHD and turbulence simulations
复制标题
用于全环形托卡马克边缘 MHD 和湍流模拟的 BOUT 扩展
DOI：
10.1016/j.cpc.2022.108568
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发表时间：
2023
影响因子：
6.3
通讯作者：
Yagi Masatoshi
中科院分区：
文献类型：
--
作者：
Seto Haruki;Dudson Benjamin D.;Xu Xue-Qiao;Yagi Masatoshi
在托卡马克边缘等离子体模拟中，等离子体模拟框架BOUT++采用双坐标系，以合理的计算代价模拟中等n和高n等离子体不稳定性，其中n为环模数。然而，该坐标系将计算域限制为环形楔（在环形方向上将整个环形划分为N个部分），以提高计算效率，并在根据涡量计算流势的场求解器中使用凹槽排序近似，这对于低n模式可能无效。然而，改善低n模的数值处理是解决低n电流驱动的边缘局域模（ELM）、共振磁扰动（RMP）控制ELM、RMP控制边缘湍流等问题的必要条件。通过混合模拟的流动势和涡度的低-N和高-N等离子体成分在一个完整的环形托卡马克边缘域。在傅立叶空间中，分别计算了正交通量面坐标系下的流势低n模和对偶坐标系下的流势高n模。该方案可以捕捉到n= 1的整体模式和高n湍流之间的相互作用，在基座崩溃在一个完整的环形圆环域与圆形截面。
For tokamak edge plasma simulation, a plasma simulation framework BOUT++ employs a dual coordinate system to simulate moderate-n and high-n plasma instability with reasonable computational cost, where n is the toroidal mode number. This coordinate system however limits the computational domain to the toroidal wedge (full torus divided into N parts in the toroidal direction) for computational efficiency and the use of flute-ordering approximation in the field solver calculating the flow potential from the vorticity which may not be valid for low-n modes. Improving numerical treatment of low-n modes is however indispensable to address simulations of low-n current-driven edge localized mode (ELM), ELM control by resonant magnetic perturbations (RMPs), edge turbulence with RMPs and so on. In this work, BOUT++ is extended to simulate the interplay between n= 0, low-n and high-n plasma components in a full annular tokamak edge domain through hybrid modeling of the flow potential and the vorticity. Low-n modes of flow potential are calculated in an orthogonal flux surface coordinate and high-n modes in the dual coordinate system separately in Fourier space. The proposed scheme can capture an interplay between n= 1 global modes and high-n turbulence during pedestal collapse in a full annular torus domain with a circular cross section.
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影响因子：
2.2
作者：
B. Dudson;X. Q. Xu;M. V. Umansky;H. Wilson;P. Snyder
通讯作者：
B. Dudson;X. Q. Xu;M. V. Umansky;H. Wilson;P. Snyder
影响因子：
2.2
作者：
B. Dudson;J. Leddy
通讯作者：
B. Dudson;J. Leddy
平衡径向电场对基座倒塌后能量损失过程的影响
影响因子：
1.6
作者：
Seto Haruki;Xu X.Q.;Dudson Benjamin D.;Yagi Masatoshi
通讯作者：
Yagi Masatoshi
日本DEMO设计偏滤器脱离和临界功率排气参数的模拟研究
影响因子：
2.6
作者：
N. Asakura;K. Hoshino;Y. Homma;Y. Sakamoto;Joint Special Design Team for Fusion Demo
通讯作者：
Joint Special Design Team for Fusion Demo
影响因子：
3.3
作者：
M. Hoelzl;G. Huijsmans;S. Pamela;M. Becoulet;E. Nardon;F. Artola;B. Nkonga;C. Atanasiu;V. Banda
通讯作者：
M. Hoelzl;G. Huijsmans;S. Pamela;M. Becoulet;E. Nardon;F. Artola;B. Nkonga;C. Atanasiu;V. Banda