CFETR氦冷偏滤器初步设计与分析

Preliminary design and analysis of CFETR He-cooled divertor

基于中国聚变工程试验堆(CFETR)偏滤器位形,初步设计了指状、平板和T形三种氦冷偏滤器模型,在10MPa入口氦压力、10MW·m^(-2)稳态热负荷下,分别对其进行传热数值分析。通过优化结构设计和氦入口参数,降低了靶板工作温度,探索了三种单元结构靶板处理高热负载的能力。在20MW·m^(-2)的稳态热负荷下,对优化后的T形和指状单元结构进行了受热分析,并由此提出了混合型CFETR氦冷偏滤器初步结构。

Based on the configuration of divertor of China fusion engineering test reactor(CFETR),T-type,finger-like and slab models of He-cooled divertor were preliminarily designed.Under the condition of 10 MPa inlet helium pressure and 10 MW·m^(-2)steady-state heat load,numerical analysises of their heat transfers were carried out.By optimizing the structural design and inlet helium parameters,the working temperature of the target plate was reduced and the ability of the target plate to handle high thermal load was improved.Under the steady-state heat load of 20 MW·m^(-2),the optimized elementary units of T-type and finger-like structures were analyzed.Consequently,the preliminary structure of hybrid CFETR He-cooled divertor was proposed.