紧密栅棒束通道氦氙混合气体流动传热特性数值模拟研究  

Numerical Simulation on Flow Heat Transfer Characteristics of Helium-Xenon Mixture in Tight Lattice Rod Bundle Channel

作　　者：张嘉鑫 鲍辉 丛腾龙 顾汉洋[1] Zhang Jiaxin;Bao Hui;Cong Tenglong;Gu Hanyang(School of Nuclear Science and Engineering,Shanghai Jiao Tong University,Shanghai,200240,China;Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]上海交通大学核科学与工程学院,上海200240 [2]中国核动力研究设计院,成都610213

出　　处：《核动力工程》2024年第4期53-60,共8页Nuclear Power Engineering

基　　金：核反应堆系统设计技术重点实验室运行基金项目(LRSDT2022407)。

摘　　要：针对氦氙冷却高温气冷堆堆芯设计和分析需求,本研究建立了一套涵盖物性模型、湍流模型与湍流普朗特数模型的氦氙混合气体三维流动传热模型,并基于此模型开展了棒束通道内氦氙混合气体流动传热数值分析,研究几何参数和运行参数对相关特性的影响规律。结果表明:包壳存在会对紧密栅棒束通道内流动传热带来较大的周向非均匀性,在子通道模拟及整体三维数值模拟中均应考虑包壳导热影响;除包壳外,紧密栅棒束通道内氦氙流动传热则主要受栅径比影响,同一工况下栅径比越大,混合气体对流换热越强烈。In response to the design and analysis requirements for the core of the helium-xenon cooled high temperature gas cooled reactor,this study has established a comprehensive three-dimensional heat transfer model for helium-xenon mixture.This model encompasses property model,turbulent model,and turbulent Pr model.Utilizing this model as a foundation,numerical analysis of the flow and heat transfer characteristics of helium-xenon mixture in the fuel rod bundle channel has been conducted.This research investigates the influence of geometric parameters and operational parameters on relevant characteristics.The results reveal that the presence of cladding will bring significant circumferential non-uniformity to the flow and heat transfer in the tight lattice rod bundle channel,necessitating consideration of cladding in both subchannel and three-dimensional numerical simulation.In addition to cladding,heat transfer in the tight lattice rod bundle channel is primarily influenced by the rod diameter ratio.Under identical simulation conditions,a larger rod diameter ratio leads to enhanced convective heat transfer of the mixed gas.

关 键 词：紧密栅棒束 氦氙混合气体 流动传热特性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]