A fast 2D Fokker-Planck solver with synergetic effects

Abstract Solution of the 2D relativistic quasilinear Fokker-Planck equation is highly desirable in problems of numerical simulation of RF current drive in tokamak plasmas, especially in codes coupling ray-tracing and transport. For practicality, a fast Fokker-Planck solver is needed. We present in this work a fast 2D Fokker-Planck solver which can be applied for time dependent current drive problems. The code is 2D relativistic, and includes the complete first Legendre harmonic term for electron-elect... Title of program: FASTFP Catalogue Id: ACVL_v1_0 Nature of problem We present in this work a fast solver for the linearized 2-D relativistic Fokker-Planck equation for current drive problems. The code makes use of the accurate relativistic collision operators presented in Ref. [14]. Convergence to the steady state can be reached in about 30 iterations. Very good precision for the solution of the distribution function can be obtained for high relativistic velocities. In the case of fast wave current drive problems, the damping of the wave is calculated self-cons ... Versions of this program held in the CPC repository in Mendeley Data ACVL_v1_0; FASTFP; 10.1016/0010-4655(94)90174-0 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)摘要 二维相对论准线性福克-普朗克（Fokker-Planck）方程的求解，在托卡马克（tokamak）等离子体射频（RF）电流驱动的数值模拟问题中，尤其是在耦合射线追踪（ray-tracing）与输运的程序中具有极高的应用价值。出于实用性需求，亟需一款高效的福克-普朗克求解器。本研究提出一款可应用于含时电流驱动问题的快速二维福克-普朗克求解器。该程序支持二维相对论计算，并包含电子-电子间完整的一阶勒让德谐波项…… 程序名称：FASTFP 目录编号：ACVL_v1_0 问题属性 本研究针对电流驱动问题，提出一款针对线性化二维相对论福克-普朗克方程的快速求解器。该程序采用文献[14]中提出的高精度相对论碰撞算子。仅需约30次迭代即可收敛至稳态，且在高相对论速度下，粒子分布函数的求解仍可获得极佳精度。针对快波电流驱动问题，可自洽计算波的阻尼…… 存放在Mendeley数据集中CPC程序库的该程序版本：ACVL_v1_0；FASTFP；10.1016/0010-4655(94)90174-0 本程序源自贝尔法斯特女王大学所维护的CPC程序库（1969-2019年）