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

页码：303 / 314

页数：12

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