Luo, J, Chu, F, Ni, Z et al. (2 more authors) (2021) Dynamics of droplet impacting on a cone. Physics of Fluids, 33 (11). 112116. ISSN 1070-6631
Abstract
Droplet rebound dynamics on superhydrophobic surfaces has attracted much attention due to its importance in numerous technical applications, such as anti-icing and fluid transportation. It has been demonstrated that changing the macro-structure of the superhydrophobic surface could result in significant change in droplet morphology and hydrodynamics. Here, we conduct both experimental and numerical studies of droplet impacting on a cone and identify three different dynamic phases by changing the impacting conditions, i.e., the Weber number and the cone angle. The spreading and retracting dynamics are studied for each phase. Particularly, it is found that in phase 3, where the droplet leaves the surface as a ring, the contact time is reduced by 54% compared with that of a flat surface. A theoretical model based on energy analysis is developed to get the rebound point in phase 3, which agrees well with the simulation result. Besides, the effect of Weber number and cone angle on the contact time is explored. Finally, the phase diagram of the three phases distribution with We and cone angle is given, which can provide guidance to related applications.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2021 Author(s). This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Jia Luo (罗佳), Fuqiang Chu (褚福强), Zhongyuan Ni (倪中原), Jun Zhang (张俊), and Dongsheng Wen (文东升) , "Dynamics of droplet impacting on a cone", Physics of Fluids 33, 112116 (2021) and may be found at https://doi.org/10.1063/5.0073049. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 24 Feb 2022 13:14 |
Last Modified: | 24 Feb 2022 13:14 |
Status: | Published |
Publisher: | AIP Publishing |
Identification Number: | 10.1063/5.0073049 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:183672 |