Effect of the liquid temperature on the interaction behavior for single water droplet impacting on the immiscible liquid
Tiantian Wang(汪甜甜)1,2, Changjian Wang(王昌建)1,3,†, Shengchao Rui(芮圣超)1,2, and Kai Pan(泮凯)1
1 School of Civil Engineering, Hefei University of Technology, Hefei 230009, China; 2 Anhui International Joint Research Center on Hydrogen Safety, Hefei 230009, China; 3 Engineering Research Center of Safety Critical Industrial Measurement and Control Technology, Ministry of Education, Hefei 230009, China
Abstract The interaction of single water droplet impacting on immiscible liquid surface was focused with the temperature varying from 50 ℃ to 210 ℃. The impact behavior is recorded with a high-speed camera running at 2000 frames per second. It is found that droplet diameter, oil temperature, and Weber number have important influences on impact behaviors. Three typical phenomena, including penetration, crater-jet, and crater-jet-secondary jet, were observed. Penetration only occurs when the Weber number is below 105. With Weber number increasing to 302, the jet begins to appear. Moreover, to gain deeper physical insight into the crater formation and jet formation, the energy of droplet impingement onto the liquid pool surface was estimated. The oil temperature has a significant effect on the energy conversion efficiency. High temperature is beneficial to improve energy conversion efficiency.
Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2017YFC0805100) and the Fundamental Research Funds for the Central Universities of China (Grant No. PA2020GDGP0052).
Corresponding Authors:
Changjian Wang
E-mail: chjwang@hfut.edu.cn
Cite this article:
Tiantian Wang(汪甜甜), Changjian Wang(王昌建), Shengchao Rui(芮圣超), and Kai Pan(泮凯) Effect of the liquid temperature on the interaction behavior for single water droplet impacting on the immiscible liquid 2021 Chin. Phys. B 30 116801
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