In this paper, the characteristics of bubble dynamic behaviors and the impacts on the triple-phase contact line are studied by a visualization investigation. A high-speed digital camera with maximum speed of 30000 frames per second is adopted to record the period of bubble growth and the geometry of the splashed liquid drops. The information of the bubble dynamic behavior and the liquid drops volume can be analyzed through the software MATLAB. The statistics of the splashed liquid drops is adopted under different heat flux conditions. The experimental results show that the bubble dynamic behaviors lead to the fluctuation of the triple-phase contact line and the splashed liquid drops make the heat transfer capability of the film in microgrooves less than its theoretical maximum value. The investigation indicates that the bubble behaviors can influence the performance of heat transfer through the fluctuations of the triple-phase contact line in the thin liquid film in microgrooves. And the splashed liquid drops appearing in boiling process can also affect the heat transfer of the liquid film in open capillary microgrooves.
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ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels
June 19–22, 2011
Edmonton, Alberta, Canada
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4463-2
PROCEEDINGS PAPER
The Impact of Bubble Dynamic Behaviors on Liquid Film in Open Capillary Microgrooves
Yang Cao,
Yang Cao
Chinese Academy of Sciences, Beijing, China
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Xuegong Hu,
Xuegong Hu
Chinese Academy of Sciences, Beijing, China
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Dawei Tang,
Dawei Tang
Chinese Academy of Sciences, Beijing, China
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Chaohong Guo,
Chaohong Guo
Chinese Academy of Sciences, Beijing, China
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Xuelei Nie
Xuelei Nie
Chinese Academy of Sciences, Beijing, China
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Yang Cao
Chinese Academy of Sciences, Beijing, China
Xuegong Hu
Chinese Academy of Sciences, Beijing, China
Dawei Tang
Chinese Academy of Sciences, Beijing, China
Chaohong Guo
Chinese Academy of Sciences, Beijing, China
Xuelei Nie
Chinese Academy of Sciences, Beijing, China
Paper No:
ICNMM2011-58194, pp. 551-555; 5 pages
Published Online:
May 11, 2012
Citation
Cao, Y, Hu, X, Tang, D, Guo, C, & Nie, X. "The Impact of Bubble Dynamic Behaviors on Liquid Film in Open Capillary Microgrooves." Proceedings of the ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 1. Edmonton, Alberta, Canada. June 19–22, 2011. pp. 551-555. ASME. https://doi.org/10.1115/ICNMM2011-58194
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