中国固体实验包层增殖子模块的温度场模拟  

Numerical simulations of the temperature field in the breeding sub-module of the ITER Chinese helium cooled solid breeder test blanket module

作　　者：张尧立[1] 周志伟[1] 解衡[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《清华大学学报（自然科学版）》2013年第1期102-105,共4页Journal of Tsinghua University(Science and Technology)

基　　金：科技部ITER计划专项经费资助项目(2010GB111006)

摘　　要：针对国际热核实验堆(ITER)中国固体实验包层模块(TBM)的铍球床中子增殖区、Li4SiO4陶瓷球床氚增殖区以及冷却剂氦气在稳态工况下的温度场,该文利用计算流体力学软件Fluent对TBM增殖子模块进行二维数值模拟。计算结果表明:在原有的设计方案下,Li4SiO4陶瓷球床的最高温度将会超过材料所允许的工作温度。该文提出的改进方法将Li4SiO4区域均匀分成3块。改进之后的方案能够满足设计要求。分析结果和改进方案可以作为ITER中国固体实验包层模块的热工水力学优化设计的参考。The temperature distributions were predicted in the helium coolant gas and the Be pebble bed as well as the Li4SiO4 pebble bed in the breeding sub-module of the International Thermonuclear Experimental Reactor （ITER） Chinese helium cooled solid breeder test blanket module （CH HCSB TBM） used in the ITER. The two-dimensional temperature field was predicted using the computationaI fluid dynamics code Fluent. The results show that the highest temperature in the Li4SiO4 pebble bed exceeds the design parameters. Since the thermal conductivity of Li4SiO4 is quite poor, the temperatures can be reduced by replacing Li4SiO4 with Liz TiOs and Lie ZrO3 or by dividing the Li4 SiO4 pebble bed into 3 equal parts. These thermal-hydraulic design improvements all satisfy the design parameters.

关 键 词：计算流体动力学 国际热核实验堆(ITER) 实验包层模块(TBM) 

分 类 号：TL642[核科学技术—核技术及应用]