Experimental Research on Flow Instability in Multi-Parallel Channels

被引：0

作者：

Wang Y. ^{[1
]}

Zhou L. ^{[1
]}

Zan Y. ^{[1
]}

Xu J. ^{[1
]}

Yan X. ^{[1
]}

机构：

[1] CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu

来源：

Hedongli Gongcheng/Nuclear Power Engineering | 2021年 / 42卷 / 01期

关键词：

Flow instability; Flow instability boundary; Parallel channels;

D O I：

10.13832/j.jnpe.2021.01.0015

中图分类号：

学科分类号：

摘要：

The flow instability in the multi-parallel channels was investigated under the condition of: P=0.89~1.32 MPa, G=500~750 kg/ (m2•s), and ΔTsub, in=58.5℃~132.3℃ with the upflow deionized water. The test section consists of 2, 3 and 5 parallel tube channels with the dimension of 1400 mm×Φ8 mm×2 mm. The characteristics of the flow instability in the parallel channels and the flow instability boundary was studied based on the experimental results. It shows that the flow excursion appears when the water in the channels becomes two phase, and period oscillation appears when the mass quality at the exit of the channel reaches to a certain level. The number of the heated channels has little effect on the flow instability boundary. © 2021, Editorial Board of Journal of Nuclear Power Engineering. All right reserved.

引用

页码：15 / 17

页数：2

共 5 条

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[4] OZAWA M, NAKANISHI S, ISHIGAI S, Et al., Flow instabilities in boiling channels: part3, experimental results in multichannel system, TRANS JSME, 22, 170, (1979)
[5] 4

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