摘要
数值模拟已经成为研究超临界水冷堆堆芯热工水力特性的重要22具。采用AnsysCFX模拟超临界水冷堆堆芯带交错叶片型定位格架子通道与无格架子通道的流动及换热。结果表明，堆芯子通道的流动及换热都存在周向不均性。交错叶片的导流作用在子通道内产生低压区形成涡，产生较强的二次流，这种流动会使包壳表面流体快速脱离壁面，同时会有其他位置处流体冲撞壁面，促进包壳表面热量的转移。从而有效地降低包壳温度，有利于功率的进一步提升。
Numerical simulation has become an important tool to study the thermal and hydraulic characteristics of Supercritical Water Reactor （SCWR）. ANSYS ICEM was employed for simulating flow and heat transfer of sub-channel with and without split vanes grid spacers. The numerical results show that, there is obviously circumferential heterogeneities of the flow and heat transfer in the sub-channels. The diversion of split vanes attached to the end of grid spacers in the sub-channels produces low regio contributes to the n and vortex. The secondary flow at the cross section of downstream of split vanes mixing of the fluid between the inside and the different sub-channels, and then significantly enhance heat transfer.
作者
邱庆刚
赵帅
丁雅倩
朱晓静
杜鑫
QIU Qing-gang;ZHAO Shuai;DING Ya-qian;ZHU Xiao-jing;DU Xin(School of Energy and Power Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《热科学与技术》
CAS
CSCD
北大核心
2018年第4期267-272,共6页
Journal of Thermal Science and Technology
基金
国家自然科学基金资助项目(51406026)
关键词
堆芯子通道
交错叶片
壁温
二次流
sub-channel of reactor core
split vanes
wall temperature
second flow interference factor
