磁约束核聚变环境中流道插件的热变形分析  

Thermal deformation of FCI under magnetic confinement nuclear fusion environment

作　　者：杜跃斐 余新刚[1] 刘捷[1] 张年梅[1] 

机构地区：[1]中国科学院大学物理学院,北京100049

出　　处：《中国科学院大学学报（中英文）》2013年第6期737-743,共7页Journal of University of Chinese Academy of Sciences

基　　金：国家自然科学基金(50936066;51376175)资助

摘　　要：对国际热核聚变实验堆的双冷锂铅包层进行流固共轭传热的三维数值模拟,计算两端不同约束下流道插件FCI结构的热变形和热应力分布,分析对流换热系数和热导率对FCI结构热变形和热应力的影响规律.结果表明,若钢壁与外界的对流换热系数增大,则FCI温度降低,导致热变形和热应力减小;高热导率的FCI材料将使得FCI沿厚度方向温度梯度减小,导致结构的热应力减小.Three-dimensional simulation on conjugate heat transfer in fluid-structure coupled field is carried out. The calculation model is built for the dual-cooled lithium-lead blanket, which is the key technology of international thermonuclear experimental reactor. The effects of thermal conductivity of FCI material SiC and the convection heat transfer coefficient on temperature field are analyzed. The results show that temperature gradients and thermal stresses decrease when the material has good thermal conductivity. High convection heat transfer coefficient results in lower temperature and decrease in thermal deformation.

关 键 词：核聚变 FCI 流固耦合 温度场 热应力 

分 类 号：TL631[核科学技术—核技术及应用]