Growth characteristics of microlayer at bottom of boiling bubble on hydrophobic heating surface

被引：0
作者：
Gao M. [1 ]
Zuo Q. [1 ]
Zhang L. [1 ]
Zhang D. [1 ]
Zhang L. [1 ]
机构：
[1] Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai
来源：
Gao, Ming (gaoming@usst.edu.cn) | 1600年 / Materials China卷 / 71期
关键词：
Bubble; Evaporation; Hydrophobic surface; Interferometric method; Microlayer; Phase change;
D O I：
10.11949/0438-1157.20200489
中图分类号：
学科分类号：
摘要：
The laser interferometric method and high-speed camera technology are combined to study the dynamic characteristics of a single ethanol bubble generated by the hydrophobic ITO heating surface, and to study the microlayer at the bottom of the bubble. The process of bubble growth and detachment was compared and analyzed with previous hydrophilic heating surface experiments. In this experiment, two high-speed cameras were used at the same time: one recorded the interference fringes of microlayer at the bottom of the bubble, and the other recorded the growth and detachment images of the single bubble from the side view. By comparing these images frame by frame and comparing with the hydrophilic heating surface experiment, it is found that the growth period of the hydrophobic surface bubble has no waiting period, and the time of the detachment period is much longer than the growth period, the microlayer at the bottom of the bubble is unstable and random slip occurs during the growth and detachment process of the bubble. © 2020, Editorial Board of CIESC Journal. All right reserved.
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页码：46 / 54
页数：8
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