Speed-up of SOLPS-ITER code for tokamak edge modeling
Speed-up of SOLPS-ITER code for tokamak edge modeling
复制标题
加速托卡马克边缘建模的 SOLPS-ITER 代码
DOI：
10.1088/1741-4326/aae162
复制
发表时间：
2018
期刊：
影响因子：
3.3
通讯作者：
D. Coster
中科院分区：
文献类型：
--
作者：
E. Kaveeva;V. Rozhansky;I. Senichenkov;I. Veselova;S. Voskoboynikov;E. Sytova;E. Sytova;X. Bonnin;D. Coster
漂移和电流的考虑大大减少了用于边缘建模的SOLP-ITER程序的时间依赖方程的积分的可访问时间步长。用复杂的中性Eirene蒙特卡罗模型和大量的多离子流体方程运行程序，计算时间长得令人无法接受。文中讨论了漂移引起时间步长限制的主要机理。文中提出了抑制这些机制的几种方法，并给出了应用修正的数值方案试验结果。这些格式的应用使收敛到稳态解的时间缩短了一个数量级以上。
Account of drifts and currents dramatically decreases the accessible time step for the integration of time dependent equations of SOLPS-ITER code for edge modeling. Running the code with sophisticated EIRENE Monte-Carlo model for neutrals and large number of fluid equations for multiple ion species makes the computation time unacceptably long. In the paper the main mechanisms leading to the time step limitations caused by drifts are discussed. Several methods of the suppression of these mechanisms are suggested and the results of numerical scheme tests with the applied corrections are presented. Application of these schemes decreases the time of convergence to steady state solution by more than an order of magnitude.