Simulation Study of Energetic Particle Effects on MHD modes in Tokamaks

托卡马克中高能粒子对MHD模式影响的模拟研究

• 批准号: 02680009
• 负责人: NAITO Hiroshi
• 金额: $ 0.96万
• 依托单位: Yamaguchi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02680009/
• 关键词: Nuclear Fusion; Tokamak; Particle Simulation; MHD mode; Kinetic Effects; Gyrokinetic Theory; 粒子シミュレ-ション; MHDモ-ド; プラズマ; MHD; 内部キンクモ-ド; 磁気面; 回転変換

As the tokamak research projects develop, the kinetic modification of MHD modes by the energetic component of the confined particles becommes progressively important. It is very difficult to modify MHD codes to include the kinetic effects. The gyrokinetic particle code has the possibility to study kinetic modifications of MHD modes. Hence we include the toroidal effects and energetic particles in the GK-code and simulated the MHD modes in tokamaks.The results of the research are as follows : 1.The three dimensional gyrokinetic particle simulation code (GK-code) was completed.2.The GK-code was applied to internal kink mode simulation in Tokamaks. The m=1 (m is a poloidal mode number) and n=1 (n is a toroidal mode number) internak kink mode and the resulting internal distruption due to magnetic reconnection was successfully simulated.3.Simulation results supports the Wesson type magnetic reconnection because the time scale of full reconnection is the order of Alven time scale.4.The code including the first order toroidal effects was completed. The GK-code with toroidal effects includes magnetic gradient drift, magnetic curvature drift, and mirroring effect.5.The effects of energetic ions on the internal kink mode are simulated by using the GK-code with toroidal effects.

随着Tokamak研究项目的发展，由密闭颗粒的能量组成部分对MHD模式的动力学修饰逐渐重要。修改MHD代码以包括动力学效应非常困难。陀螺仪粒子代码有可能研究MHD模式的动力学修饰。因此，我们在GK代码中包括环形效应和能量颗粒，并模拟Tokamak中的MHD模式。研究结果如下：1。三维陀螺仪粒子模拟代码（GK-CODE）完成。2。将GK代码应用于Tokamaks中的内部扭结模式模拟。 m = 1（m是一个多型模式数），n = 1（n是环形模式编号）internak扭结模式，并且成功模拟了由于磁重新连接而产生的内部分散量因为完整重新连接的时间尺度是ALVEN时间尺度的顺序。4。包括一阶环环效应的代码完成了。带有环形效应的GK代码包括磁性梯度漂移，磁曲率漂移和镜像效应。5。通过使用带有环形效应的GK代码来模拟能量离子对内部纠结模式的影响。

项目成果

内藤裕志: "数値実験トカマクプロジェクトとジャイロ運動論的粒子シミュレーション" プラズマ・核融合学会誌. 70. 135-145 (1994)

Hiroshi Naito：“数值实验托卡马克项目和回旋粒子模拟”日本等离子体与核聚变学会杂志 70. 135-145 (1994)。

Hiroshi Naitou: "Internal Kink Mode Simulation by 3ーD Gyrokinetic Code" Physics of Fluids.

Hiroshi Naitou：“通过 3-D 回旋代码模拟内部扭结模式”流体物理学。