【作者】 郑平卫； 龚学余； 何丽华； 杜丹；

【Author】 ZHENG Ping-wei~1,GONG Xue-yu~1,HE Li-hua~1,DU Dan~2 (1.School of Nuclear Science and Technology,University of South China,Hengyang of Hunan Prov.,421001,China; 2.Department of Mathematics and Physics,University of South China,Hengyang of Hunan Prov.421001,China)

【机构】 南华大学核科学技术学院； 南华大学数理学院；

【摘要】 求解电子回旋波注入下三维反弹平均Fokker-Planck方程得到分布函数,由分布函数计算得到驱动电流分布。考虑超热电子径向扩散对电流驱动问题的影响,在方程中加入了径向扩散输运项。采用九点格式的中心差分对方程进行数值离散得到系数矩阵,对系数矩阵进行不完全LU分解作为预处理算子,利用双共轭梯度稳定法(BiCGSTAB)求解得到分布函数,计算出电子回旋波驱动电流分布。计算结果与BANDIT3D进行了比较,分布趋势能够较好地符合。更多还原

【Abstract】 The driven current profile is got by solving three-dimensional bounce-averaged Fokker-Planck equation in the presence of electron cyclotron wave.An additional term relate to radial transport is added to the equation accounting for the influence of super-thermal electrons radial diffusion for current drive.Coefficient matrix is got by discretizing the Fokker-Planck equation using nine-point center differential scheme,then incomplete LU decomposition is executed for precondition purpose,making use of BiCGSTAB method,the distribution function is obtained,from which the drive current profile of electron cyclotron wave is calculated.The result was compared with BANDIT3D,which shown that the tendency of our profile matched well with the BANDIT3D.更多还原