Study on the effect of drain wall structure on the liquid film behavior in scrubbing-cooling tube

被引：0
作者：
Pan Z. [1 ]
Wang Y. [1 ]
Zeng J. [1 ]
Li T. [1 ]
Yu G. [1 ]
机构：
[1] Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai
来源：
Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2023年 / 37卷 / 05期
关键词：
falling film; heat transfer; scrubbing-cooling; turbulence;
D O I：
10.3969/j.issn.1003-9015.2023.05.003
中图分类号：
学科分类号：
摘要：
In order to improve the internal mass and heat transfer efficiency of scrubbing-cooling tube, the corrugated walls with different wall structures were used to enhance the fluctuation of the liquid film in the main heat exchange area of the scrubbing-cooling tube. Under the condition of ReL = 8.3×103-3.14×104, the characteristics of the liquid film thickness and velocity distribution were investigated using an ultrasonic Doppler velocimetry (UDV). The experimental results show that the existence of corrugated wall structure strengthens the disturbance of the liquid film, obviously thickens the mean thickness of the liquid film, and promotes the uniformity of the axial distribution of the liquid film thickness. The perturbation of the corrugated wall structure reduces the probability of large waves, and makes the substrate liquid film more violent; however, the corrugated wall structure will produce a certain backflow phenomenon. © 2023 Zhejiang University. All rights reserved.
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页码：707 / 716
页数：9
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