Non-uniform flow distribution in the steam generator U-tubes of a pressurized water reactor plant during singleand two-phase natural circulations

被引：72
|
作者：
Jeong, JJ [1 ]
Hwang, M [1 ]
Lee, YJ [1 ]
Chung, BD [1 ]
机构：
[1] Korea Atom Energy Res Inst, Taejon 305600, South Korea
来源：
NUCLEAR ENGINEERING AND DESIGN | 2004年 / 231卷 / 03期
关键词：
D O I：
10.1016/j.nucengdes.2004.02.002
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：
A flow model is formulated to analyze the single- and two-phase flow characteristics in the primary side of a vertical, inverted U-tube steam generator. Using the flow model, a pressure drop-mass flow rate curve is derived. It is shown that the curve has a negative slope and, thus, flow excursion instability can occur under certain low-flow conditions. The stability criterion and its physical interpretation are given. Nonuniform flow behaviors in multiple U-tubes of different tube lengths are also discussed. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：303 / 314
页数：12
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