Kinetic Transport Simulation in Toroidal Plasmas

1.在轴对称几何条件下建立了动力学输运方程。从回旋运动方程出发，通过对库仑碰撞算符进行反弹平均，导出了新经典输运算符.本文将三维Fokker-Planck程序（ASK/FP）推广到描述等离子体中多粒子的速度分布。将相对论性和能量守恒的非线性库仑算子引入到程序中，通过对各磁表面速度分布的并行处理，大大提高了程序的数值性能.采用集成的托卡马克模型化程序（包括扩展的Fokker-Planck模块）和程序（包括扩展的Fokker-Planck模块）对托卡马克等离子体湍流输运模型进行了系统的比较，并对新开发的动态输运模块进行了评价.通过对相空间中新经典输运算子的求解，讨论了非轴对称几何条件下动力学输运方程的形式.基于回旋动力学理论对周边等离子体进行了动力学分析。发展了一种适用于强剪切等离子体的新算法，并与全粒子模拟的结果进行了比较。研究了磁化等离子体鞘层势的形成以及粒子入射角和能量的分布。

1. Kinetic transport equation was formulated in an axisymmetric geometry. Starting from the gyrokinetic equation we have derived the neoclassical transport operators by bounce averaging the Coulomb collision operators.2. Three-dimensional Fokker-Planck code, TASK/FP, was extended to describe the velocity distribution Sanctions of multi-species in a plasma. Relativistic and energy-conserving nonlinear Coulomb operators were implemented into the TASK/FP.code and numerical performance was considerably improved by parallel processing for velocity distributions on each magnetic surface.3. The integrated tokamak modeling, code TASK including the extended Fokker Planck module TASK/FP was used in systematic comparison of turbulent transport models fix takamak plasmas and evaluation of newly-developed dynamic transport module TASK/TX.4. Formulation of kinetic transport equation for non-axisymmetric geometry was discussed by evaluating the neoclassical transport operator in phase space.5. Kinetic analyses of peripheral plasmas were carried out based on the gyrokinetic theory. A new algorithm appropriate for plasmas with strong flow shear was developed and agreement with the results of full particle simulation was confirmed. The formation of sheath potential in magnetized plasmas and the distribution of incident angle and energy of the particles striking a wall were examined.