中国液态锂铅热对流实验回路DRAGON-Ⅰ温度场和速度场数值模拟分析  

Simulation and analysis on the temperature and velocity fields of LiPb flow in the thermal convection loop DRAGON-Ⅰ of China

作　　者：朱志强[1] 汪卫华[1] 章毛连[1] 高胜[1] 金鸣[1] 宋勇[1] 黄群英[1] 吴宜灿[1] FDS团队 

机构地区：[1]中科院等离子体物理研究所,安徽合肥230031

出　　处：《核科学与工程》2008年第2期172-175,171,共5页Nuclear Science and Engineering

基　　金：国家自然科学基金项目(10675123和10775135);中科院知识创新工程项目

摘　　要：锂铅实验回路是研究聚变堆液态金属锂铅包层关键科学技术问题的必备装置,其锂铅温度场和速度场分布对分析相关实验结果是必需的。DRAGON-I是中国第一座热对流锂铅实验回路,采用FLU-ENT软件对该回路中液态锂铅的温度场和速度场进行了二维和三维模拟分析。结果表明:回路内锂铅温度场分布符合回路设计时的温度变化要求,并在回路管径截面上变化很小;锂铅速度除了在回路上端两个直拐角处波动较大外,其余管道直段波动非常小,平均速度约0.14 m/s。LiPb loop is the indispensable facility to investigate key issues for liquid LiPb blanket of fusion reactors, and its distribution of temperature and velocity fields of liquid LiPb is very necessary for the analysis of experiment results. DRAGON-Ⅰ is the first thermal convection LiPb loop of China, the temperature and velocity fields of liquid LiPb was simulated with 2D and 3D models by FLUENT code. The results show that the temperature of liquid LiPb changes in conformity with design demands, with less change on the section of pipe diameter direction, and there was almost no fluctuation for velocity inside the pipe except for small regions at the two right-angle corners at the top of the loop, the velocity is averaged about 0.14 m/s.

关 键 词：锂铅包层 实验回路 温度场和速度场 

分 类 号：TL64[核科学技术—核技术及应用] TL627