非能动余热排出热交换器传热过程的数值模拟  

Numerical Simulation of Heat Transfer Process of Passive Residual Heat Removal Heat Exchanger

作　　者：门启明[1] 王学生[1] 冯葵香[2] 孟祥宇[1] 

机构地区：[1]华东理工大学机械与动力工程学院,上海200237 [2]上海核工程研究设计院,上海200233

出　　处：《华东理工大学学报（自然科学版）》2014年第1期26-32,共7页Journal of East China University of Science and Technology

摘　　要：采用计算流体力学软件Fluent对非能动余热排出热交换器(PRHR HX)全尺寸简化模型进行了非稳态数值模拟研究,得到了安全壳内置换料水箱(IRWST)整个受热过程中的传热和流动特性。比较分析了不同时刻、不同位置水箱内两相流动时温度场和流场的变化。根据沸腾相变的两相流模型,对水箱内沸腾两相流的流动进行了数值计算,得到了沸腾两相流流动时的温度场、流场和气相分率等结果。Based on the computational fluid mechanics software Fluent, simplified full-size model of Passive Residual Heat Removal Heat Exchanger （PRHR HX） was simulated with the transient numerical method. Its temperature-field and flow characteristics during the heating process were obtained. The distributions of temperature-field and flow field in different locations at different time were compared. Moreover, through the employment of boiling model, the two-phase flow in In Containment Refueling Water Storage Tank （IRWST） was also simulated numerically. The temperature field, flow-field and vapor phase fraction during the two phase flow were finally obtained to provide reference for the effective operation of passive residual heat removal system.

关 键 词：非能动余热排出热交换器 数值模拟 自然对流 沸腾 内置换料水箱 

分 类 号：TL353.1[核科学技术—核技术及应用]