CFETR水冷包层两元混合增殖球床流动特性研究  

Flow characteristics analysis of purge gas in binary mixed pebble bed of water-cooled ceramic blanket for CFETR

作　　者：陈有华 陈磊[2] 刘松林[1,2] 

机构地区：[1]中国科学技术大学,合肥230027 [2]中国科学院等离体子物理研究所,合肥230031

出　　处：《核聚变与等离子体物理》2017年第4期452-456,共5页Nuclear Fusion and Plasma Physics

基　　金：国家磁约束核聚变能发展研究专项(2013GB108004;2015GB108002)

摘　　要：作为中国聚变工程实验堆(CFETR)候选包层之一的水冷包层(WCCB),拟采用不同尺寸的两元混合增殖球床以增加球床的填充率,从而满足氚增殖比(TBR)要求。采用离散元方法(DEM)建立了满足中子学要求的CFETR水冷包层两元球床填充结构,通过CFD计算分析获取了氦气在球床颗粒间隙之间的流动特性,包括孔隙率分布、速度分布和压降等。As one of the breeding blanket candidates for China Fusion Engineering Test Reactor （CFETR）, the water-cooled ceramic blanket （WCCB） was proposed to use binary mixed breeding pebble bed in order to increase the packing factor and meet tritium breeding ratio requirement. The DEM method was used to establish the packing structure of binary pebble bed which can meet the neutronics requirements and the flow characteristic of helium in the pebble bed was analyzed by CFD simulation. Porosity distribution, velocity distribution and pressure drop in the pebble bed were discussed.

关 键 词：中国聚变工程实验堆 水冷包层 两元球床 离散元方法 流动特性 

分 类 号：TL334[核科学技术—核技术及应用]