压水堆棒束定位格架两相搅混特性数值研究  

Numerical Study of Two-phase Mixing Characteristics on PWR Rod Bundle With Spacer Grid

作　　者：陈曦[1] 张虹[1] 

机构地区：[1]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,四川成都610041

出　　处：《原子能科学技术》2014年第9期1589-1594,共6页Atomic Energy Science and Technology

摘　　要：本文提出一种CFD方法用于评价压水堆燃料棒束定位格架两相搅混特性。针对两种典型的定位格架,采用CFX12.0进行了空气-水两相流动的数值模拟,并与采用氟里昂工质开展的临界热流密度(CHF)实验进行对比。结果表明,CFD方法可初步应用于评价格架下游汽泡的分布特性。A CFD method to evaluate two-phase mixing characteristics on PWR fuel rod bundle with spacer grids was presented in this paper .Numerical simulations on two-phase flow were carried out with CFX12.0 for two different types of spacer grid ,and the simulating results were compared with the results of critical heat flux （CHF） test with Freon .The results show that the CFD method applied to predict bubble distribu-tion characteristics in the dow nstream region of space grids is preliminarily validated .

关 键 词：CFD 定位格架 两相 搅混 

分 类 号：TL334[核科学技术—核技术及应用]