铁芯托卡马克中二维和三维极向磁场计算模型的对比分析  

Comparative analysis of two-dimensional and three-dimensional models for poloidal magnetic field calculation in tokamak with iron core

作　　者：程际 陈志鹏[1,2] 余文曌 李复名 饶波 谈浩[1,2] 王之江[1,2] 庄革 

机构地区：[1]华中科技大学强电磁工程与新技术国家重点实验室 [2]华中科技大学电气与电子工程学院,武汉430074

出　　处：《核聚变与等离子体物理》2015年第3期246-252,共7页Nuclear Fusion and Plasma Physics

基　　金：国家自然科学基金(10935004,10990214,11305070);国家磁约束核聚变能研究专项(2013GB106001,2014GB103001);中央高校基础科学研究经费支持项目(2013TS062)

摘　　要：为方便计算托卡马克磁场分布,建立了一些二维解析铁芯模型。由于前提假设的不同而给磁场分布的计算带来了不同的边界条件,因而得到的磁场分布计算结果与实际情况有所偏差。为了获得铁芯托卡马克的极向磁场三维分布,建立了带铁芯的极向磁场线圈三维数值模型,计算铁芯托卡马克的三维磁场,与不同铁芯模型的磁场计算结果进行比较,并且研究铁芯托卡马克的三维磁场的极向分量在环向上的不对称性。For simplifying the calculation the magnetic distribution on tokamak, some two-dimensional analytic models including the effect of the iron core were established, such as the infinite long iron core model and the spool model. The assumptions of these two-dimensional analytic models lead to different results with the actual magnetic field due to the distinctive boundary condition. In order to accurately calculate the three-dimensional magnetic field distribution in the tokamak with iron core, a three-dimensional numerical finite element model was established based on J-TEXT tokamak. In two conditions, where the total toroidal current is nonzero or zero respectively, more comparison were carried out between the derived results of two-dimensional models and the results at different toroidal positions in three-dimensional models. Furthermore, the toroidal asymmetry of the magnetic field distribution of the three-dimensional model of tokamak with iron core was investigated. The results indicate that the three-dimensional construction of iron core causes the toroidal asymmetric poloidal magnetic field and the difference between the two- and three-dimensional models in the condition with total current of nonzero. However, in the condition with total current of zero, the intensity of toroidal asymmetric is reduced and the difference between the two- and three-dimensional models is smaller.

关 键 词：托卡马克 铁芯 极向磁场 

分 类 号：TL622[核科学技术—核技术及应用]