Research on Flow Field in Rod Bundle Channel under Low Reynolds Number Using PIV Technique

被引：0

作者：

Qi P. ^{[1
]}

Deng J. ^{[2
]}

Tan S. ^{[1
]}

Qiu F. ^{[1
]}

Yu X. ^{[1
]}

机构：

[1] Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin

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

来源：

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

关键词：

Flow resistance; PIV; Rod bundle; Transition; Turbulence characteristics;

D O I：

10.13832/j.jnpe.2021.01.0018

中图分类号：

学科分类号：

摘要：

Based on the particle image velocimetry (PIV) technique, the flow visualization in the fully developed 5×5 rod bundle channel at low Reynolds number was studied. The Reynolds number ranges from 310 to 12296. The experimental results show that the relative velocity gradient in the rod bundle channel is more significant at low Reynolds number. With the increasing of Reynolds number, the velocity distribution in the rod bundle channel tends to be uniform. The transition observed by the resistance characteristics in the rod bundle channel are more ambiguous than those in the circular tube, and the transition Reynolds number is about 900. Under the influence of low Reynolds number effect, the dimensionless RMS velocity decreases with the increasing of Reynolds number, while near the transition Reynolds number, the dimensionless RMS increases with the increasing of Reynolds number. Besides, the experimental data can be used to verify the applicability of the turbulence model to different Reynolds Numbers. © 2021, Editorial Board of Journal of Nuclear Power Engineering. All right reserved.

引用

页码：18 / 22

页数：4

共 17 条

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