堵流条件下矩形并联通道非均匀流动传热模拟方法研究  

Modelling Analysis of Non-uniform Flow and Heat Transfer in Parallel Rectangular Channels under Flow Blockage Condition

作　　者：陈佳跃 王泽锋 王啸宇 陈焕栋 Chen Jiayue;Wang Zefeng;Wang Xiaoyu;Chen Huandong(Sino-French Institute of Nuclear Engineering and Technology,Sun Yat-Sen University,Zhuhai,Guangdong,519082,China;Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]中山大学中法核工程与技术学院,广东珠海519082 [2]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213

出　　处：《核动力工程》2023年第S01期1-8,共8页Nuclear Power Engineering

基　　金：核反应堆系统设计技术重点实验室基金(HT-KFKT-02-2020003)。

摘　　要：为建立矩形并联通道非均匀流动传热模拟方法,针对板型燃料元件的安全分析提供新的模拟方法和工具,本研究采用一维两流体模型和燃料元件二维导热模型开发热工水力瞬态分析程序,对堵流条件下非均匀流动传热进行模拟。通过数值模拟得到不同堵流工况下流量分配和燃料温度分布,此外对4种不同功率分布下燃料元件二维导热效应进行研究。研究结果表明,堵流后并联通道流量和传热量将重新分配,二维导热模型使燃料元件截面温度场分布更均匀。本文开发的热工水力瞬态分析程序能够用于板型燃料元件非均匀流动传热现象的模拟。In order to establish the non-uniform flow and heat transfer modelling method for parallel rectangular channels,and provide a new modelling method and tool for the safety analysis of plate-type fuel,one dimensional two-fluid model coupled with two-dimensional heat conduction of fuel are used to develop a thermal-hydraulic transient analysis code for non-uniform flow and heat transfer simulation under flow blockage condition.The flow distribution and fuel temperature field under different blockage conditions are obtained by numerical simulation,and the twodimensional heat conduction effect of the fuel under four different power distributions is also studied.The simulation results show that the flow and heat transfer in parallel channels would redistribute after blockage.And the two-dimensional heat conduction model predictes a more uniform temperature profile of fuel plate cross-section.Thus,the thermal-hydraulic transient analysis code developed in this paper can be unsed to simulate the non-uniform flow and heat transfer for the plate-type fuel.

关 键 词：板型燃料 堵流 矩形通道 并联通道 

分 类 号：TL334[核科学技术—核技术及应用]