摘要
通过模化实验的方法 ,在 1/4模型上进行了流动可视化实验 ,研究了稳压器底部封头内的流动情况 ,并在 1/5模型上进行了局部对流换热系数的测定 .实验研究发现 ,流体在封头内以面推进的方式上升或下降 ;有、无稳压器分配罩对封头内对流换热系数的影响较大 ,在无分配罩时 ,封头内各点的对流换热系数远小于有分配罩和支撑板时的情况 ;封头内的相对对流换热系数符合 0 .2 /sinθ的分布规律 ,并且基本上与进口管的雷诺数成正比 .实验结果为稳压器封头的安全性分析提供了依据 .
Flow visualization was performed on a 1/4 scale model of pressurizer and several different types of flow are investigated in the down head area of the model. Local convective heat transfer coefficient was investigated on a 1/5 scale model of pressurizer. The experiment interface can be seen between inlet fluid and fluid in the head. It is found that distribution basket has great effect on convective heat transfer coefficient. The distribution of local convective heat transfer coefficient in head of pressurizer satisfies the 0.2/sinθ law. The results can be used as data base for safety analysis of pressurized water reactor (PWR).
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2001年第7期679-681,690,共4页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目 (5 9995 46 0 - 3)
中国核动力研究设计院资助项目
关键词
压水堆
核电站
稳压器
封头
传热
局部对流换热系数
流体分配罩
Flow visualization
Heat convection
Heat transfer coefficients
Mathematical models
Pressurization
