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Bouncing droplets on micro grooved non wetting surfaces

文献类型：期刊论文

作者Wang, ShiZheng; Huang XF(黄先富); Chen, Longquan3,4; Yu, YingSong
刊名PHYSICS OF FLUIDS
出版日期2023-02
卷号35期号:2页码:27118
ISSN号1070-6631
DOI10.1063/5.0134783
英文摘要Water droplets impinging on micro grooved polydimethylsiloxane surfaces were studied. Depending on the impact velocity and surface roughness, different phenomena such as no bouncing, complete rebound (CR), bouncing occurring with droplet breakup (BDB), partial rebound, and sticky state were observed. The lower limit of impact velocity for bouncing droplets can be determined by balancing the kinetic energy of the droplet with energy barrier due to contact angle hysteresis. To predict the upper limit of impact velocity for bouncing droplets, a high speed camera was used to record droplet impact at an ultrahigh speed and it was found that the transition from CR to BDB was attributed to a local wetting transition from the Cassie Baxter state to the Wenzel state. Based on the experimental observation, a theoretical model was developed to predict the upper limit of impact velocity taking into account the penetration of the liquid into the micro grooves. In addition, there was a shorter contact time of bouncing droplets with the decrease in the Weber number and surface roughness has a small influence on the contact time in our experiments.
分类号一类/力学重要期刊
WOS研究方向Mechanics ; Physics, Fluids & Plasmas
语种英语
WOS记录号WOS:000937572000006
资助机构National Natural Science Foundation of China [11572114, 12272085] ; PetroChina Innovation Foundation [2019D 5007 0102] ; Chinese Academy of Sciences Key Research Program of Frontier Sciences [QYZDJ SSW JSC019] ; Innovation Demonstration Base of Ecological Environment Geotechnical and Ecological Restoration of Rivers and Lakes [2020EJB004]
其他责任者Yu, YS (corresponding author), Hubei Univ Technol, Sch Civil Engn Architecture & Environm, Dept Mech, Wuhan 430068, Peoples R China. ; Huang, XF (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. ; Huang, XF (corresponding author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China. ; Yu, YS (corresponding author), Hubei Univ Technol, Innovat Demonstrat Base Ecol Environm Geotech & Ec, Wuhan 430068, Peoples R China.
源URL[http://dspace.imech.ac.cn/handle/311007/91856]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Hubei Univ Technol, Sch Civil Engn Architecture & Environm, Dept Mech, Wuhan 430068, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
4.Univ Elect Sci & Technol China, Yangtze Delta Reg Inst Huzhou, Huzhou 313001, Peoples R China
5.Univ Elect Sci & Technol China, Sch Phys, Chengdu 610054, Peoples R China
6.Hubei Univ Technol, Innovat Demonstrat Base Ecol Environm Geotech & Ec, Wuhan 430068, Peoples R China
推荐引用方式
GB/T 7714		 Wang, ShiZheng,Huang XF,Chen, Longquan,et al. Bouncing droplets on micro grooved non wetting surfaces[J]. PHYSICS OF FLUIDS,2023,35(2):27118.
APA Wang, ShiZheng,黄先富,Chen, Longquan,&Yu, YingSong.(2023).Bouncing droplets on micro grooved non wetting surfaces.PHYSICS OF FLUIDS,35(2),27118.
MLA Wang, ShiZheng,et al."Bouncing droplets on micro grooved non wetting surfaces".PHYSICS OF FLUIDS 35.2(2023):27118.

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来源：力学研究所

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