聚变发电试验堆固态包层瞬态电磁载荷的数值模拟

Numerical Simulation of Transient Electromagnetic Load of Solid Blanket of Fusion Reactors

包层作为聚变堆中最重要的部件之一,其工作状态的分析是保证包层系统安全稳定运行的必要一步.以中国聚变工程试验堆中氦冷固态包层为例,分析包层工作所处的电磁环境,根据等离子破裂的具体工况,利用Ansys Workbench平台中的Maxwell电磁模块进行了磁场系统和包层系统的建模,模拟分析具体工况下固态包层上的瞬态电磁载荷,得到等离子破裂下的涡流分布图、矢量图、电磁力曲线图以及产生的扭矩.可知破裂产生的电磁影响在径向上最大,径向电磁力最大且线性破裂的影响大于指数破裂.为CFETR固态包层的安全分析和进一步设计改进提供参考数据.

As one of the most important components in fusion reactor, the analysis of its working state is an essential step to ensure the safe and stable operation of a blanket system. In this paper, the helium cooled ceramic blanket in CFETR is used as an example to analyze the electromagnetic environment in which the blanket is working. According to specific working conditions of plasma disruption, Maxwell electromagnetic module in an Ansys Workbench platform is used to build the magnetic field system and the blanket system. The transient electromagnetic load on solid-state blanket is analyzed by means of simulation. The eddy current distribution, vector and electromagnetic force curves and the generated torques under plasma disruption are obtained. It is found that the electromagnetic effect of the disruption is the largest in the radial direction, and the effect of the linear disruption is more significant than exponential disruption. This provides a reference to experimental data for safety analysis and further design improvements of CFETR solid blanket.