Investigation on Direct Contact Condensation of Steam with Non-Condensable Gas in a T-Junction

被引：0

作者：

Wang J. ^{[1
]}

Lu T. ^{[1
]}

Deng J. ^{[2
]}

Zhang Z. ^{[2
]}

Lu Q. ^{[2
]}

机构：

[1] School of Mechanic and Electronic Engineering, Beijing University of Chemical Technology, Beijing

[2] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu

来源：

Hedongli Gongcheng/Nuclear Power Engineering | 2020年 / 41卷

关键词：

Direct contact condensation; Non-condensable gas; Pressure oscillation; Steam plume shape; Temperature oscillation;

D O I：

10.13832/j.jnpe.2020.S2.0114

中图分类号：

学科分类号：

摘要：

The VOF multiphase flow model and the self-programming condensation model are used to simulate the steam direct contact condensation with non-condensable gas. The effects of non-condensable gas on the steam shape, temperature and pressure oscillation were studied. The results show that the gas plume movement in the experiment is well reproduced by numerical calculation. The phenomenon of Chugging is restrained with a small amount of non-condensable gas. At the intersection of the main and branch pipe, the temperature fluctuation increases due to the condensing rate reduces with the non-condensable gas. However, the peak value of pressure oscillation decreases and the formation of negative pressure is weakened. In addition, the peak value of condensation pressure oscillation occurs when the temperature fluctuation decreases, which indicates that the peak value of condensation pressure oscillation occurs at the moment when the subcooled water flows into the branch pipe. © 2020, Editorial Board of Journal of Nuclear Power Engineering. All right reserved.

引用

页码：114 / 120

页数：6

共 9 条

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