Experimental study on Ledinegg flow instability of two-phase natural circulation in narrow rectangular channels at low pressure

被引：10

作者：

Qi, Shi ^{[1
,2
,3
]}

Zhou, Tao ^{[1
,2
,3
]}

Li, Bing ^{[1
,2
,3
]}

Shahzad, Muhammad Ali ^{[1
,2
,3
]}

Zou, Yaxiong ^{[1
,2
,3
]}

Huang, Yan-Ping ^{[4
]}

机构：

[1] North China Elect Power Univ, Sch Nucl Sci & Engn, Beijing 102206, Peoples R China

[2] North China Elect Power Univ, Nucl Safety & Thermal Power Standardizat Inst, Beijing 102206, Peoples R China

[3] Beijing Key Lab Pass Safety Technol Nucl Energy, Beijing 102206, Peoples R China

[4] CNNC Key Lab Nucl Reactor Thermal Hydraul Technol, Chengdu 610041, Peoples R China

来源：

PROGRESS IN NUCLEAR ENERGY | 2017年 / 98卷

基金：

中国国家自然科学基金;

关键词：

Narrow rectangular channel; Two-phase flow; Low pressure; Natural circulation; Ledinegg flow instability;

D O I：

10.1016/j.pnucene.2017.04.011

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：

Ledinegg flow instability of two-phase natural circulation has been experimentally investigated based on a natural circulation device with narrow rectangular channels. When heating power reaches a certain range, the Ledinegg flow instability occurs in the system, accompanied by flow oscillation. The stability of the experimental system increases with the increasing of inlet sub-cooling, pressure and size of rectangular channels. Stability boundaries of the system are obtained by the sub-cooling number and the phase change number. It is discovered that there are 4 stages of Ledinegg flow instability in the narrow rectangular channels: condensation, ebullition, choking, and rebalance. Finally, the experience correlation is proposed for the initial power of Ledinegg flow instability in narrow rectangular channels. (C) 2017 Elsevier Ltd. All rights reserved.

引用

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页码：321 / 328

页数：8

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