自然循环蒸汽发生器倒U型管内单相水流动及传热特性分析  

INVESTIGATION ON WATER FLOW AND HEAT TRANSFER IN U TUBES OF STEAM GENERATOR WITH NATURAL CIRCULATION

作　　者：杨瑞昌[1] 覃世伟[1] 刘若雷[1] 

机构地区：[1]热科学与动力工程教育部重点实验室,清华大学热能工程系北京100084

出　　处：《工程热物理学报》2006年第1期130-132,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50476012)

摘　　要：本文以模拟压水反应堆一回路系统在自然循环条件下运行时的蒸汽发生器为对象,提出了分析蒸汽发生器并联倒U型管内单相水的流动及传热流特性的数学模型及相应的数值计算方法,计算结果表明,在一定的回路系统自然循环流动条件下,并联倒U型管内会同时发生正流和倒流。并发现,蒸汽发生器倒U型管内的倒流对一回路系统的自然循环流量有重要影响。A mathematical model and numerical calculation method to analyze the single phase water flow and heat transfer behavior in inverted U-tubes of a steam generator with natural circulation have been presented. The calculation results show that normal flow and reverse flow can simultaneously exist in the inverted U-tubes of the steam generator with natural circulation. It is also found from the calculation results that the reverse flow in the inverted U-tubes of the steam generator has great influences on the mass flow rate in the natural circulation system.

关 键 词：蒸汽发生器 自然循环 倒流流动 传热 

分 类 号：TK22[动力工程及工程热物理—动力机械及工程]