超临界水冷反应堆内带定位格架的类三角形堆芯通道流动传热特性研究  

Numerical Study on the Flow and Heat Transfer Characteristics of Sub-channel with Triangle Distribution Using Gird Spacer in SCWR

作　　者：王为术[1] 许鹏[1] 徐维晖[1] 朱晓静[2] 毕勤成[3] WANG Wei-shu;XU Peng;XU Wei-hui;ZHU Xiao-jing;BI Qin-cheng(Institute of Thermal Energy Engineering,North China University of Water Resources and Electric Power,Zhengzhou of Henan Prov.450011,China;School of Energy and Power Engineering,Dalian University of Technology,Dalian of Liaoning Prov.116024,China;National Key Laboratory of Multiphase Flow in Power Engineering,Xi'an Jiaotong University,Xi'an of Shanxi Prov.710049,China)

机构地区：[1]华北水利水电大学热能工程研究中心,河南郑州450011 [2]大连理工大学能源与动力学院,辽宁大连116024 [3]西安交通大学动力工程多相流国家重点实验室,陕西西安710049

出　　处：《核科学与工程》2018年第5期750-756,共7页Nuclear Science and Engineering

基　　金：国家自然科学基金项目(51406026);河南省高校科技创新团队支持计划资助项目(16IRTSYHN017);河南省科技创新人才计划(154100510011)

摘　　要：采用结构化多面体网格和商用CFD软件对反应堆堆芯棒径D=8 mm,栅距比P/D=1.4超临界水冷反应堆内带定位格架类三角形堆芯通道内超临界水流动与传热特性进行研究。研究结果表明:采用SSG湍流模型计算得出的内壁温度与实验数据吻合良好。定位格架会导致工质产生扰动,阻流片型定位格架比标准型定位格架对流体扰动影响大。定位格架可强化堆芯通道内超临界水传热,阻流片型定位格架末端强化换热能力要优于标准型定位格架。Numerical studies on heat transfer and fluid flow characteristics of sub-channel with triangle distribution with grid spacer in the supercritical water reactor with commercial CFD code using structured polygonal mesh were carried out.In this study,the rod diameter was 8 mm and the pitch-to-diameter was 1.4.Results indicated that the inner wall temperature of sub-channel with standard gird spacer using SSG turbulence model was well fit the experimental data.It was found that the effect of grid spacer with flow-blockage disc on fluid flow was stronger than the standard grid spacer.The grid spacer could strengthen the heat transfer in the sub-channel,and the heat transfer capability of flow-blockage disc grid spacer was better than the standard grid spacer.

关 键 词：超临界水冷反应堆 类三角形子通道 定位格架 流动特征 传热特性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]