Analysis of single phase flow instability in U-tubes of steam generator

被引：8
|
作者：
Yang, Bo [1 ]
Wang, Chuan [2 ]
Li, Xiao-Jun [3 ]
机构：
[1] Huazhong Univ Sci & Technol, Wuhan 430074, Peoples R China
[2] Naval Med Res Inst, Shanghai 200433, Peoples R China
[3] Xian Res Inst Hitech, Xian 710025, Shaanxi, Peoples R China
来源：
ANNALS OF NUCLEAR ENERGY | 2017年 / 109卷
关键词：
Parallel U-tubes; Flow instability; Inlet temperature; Natural circulation; NATURAL CIRCULATION; REVERSE FLOW; UTSG;
D O I：
10.1016/j.anucene.2017.05.028
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Based on the one-dimensional thermal hydraulic model for U-tubes under natural circulation, the flow characteristic of the single phase fluid in the parallel U-tubes is studied. The critical pressure drop (CPD) and critical mass flow rate (CMFR) are also given and analyzed, which relate to the occurrence of reverse flow in U-tubes and are influenced by the inlet temperature. The U-tubes in marine and commercial steam generators are chosen to investigate the effect of inlet temperature on the flow instability. It is found that (1), the CMFR increases and the CPD decreases with the increase of the inlet temperature, (2) the inlet temperature has great influence on the space distribution of reverse flow in the marine steam generator with the small size, but it has little influence on that in the commercial steam generator with the large size. (C) 2017 Published by Elsevier Ltd.
引用
收藏
页码：180 / 184
页数：5
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