LAPSE:2020.1170v1
Published Article
LAPSE:2020.1170v1
Contact Time of Double-Droplet Impacting Superhydrophobic Surfaces with Different Macrotextures
November 24, 2020
The contact time of droplets on superhydrophobic surfaces is an especially important parameter in many applications, such as self-cleaning, anti-icing, and spray cooling. In this study, we investigate the contact time of two identical droplets simultaneously impacting superhydrophobic surfaces decorated with three different macrotextures, i.e., bathtub-like groove (S1), vertical wall (S2), and rectangular ridge (S3), via lattice Boltzmann method (LBM) simulations. We explore influences of the geometrical parameters of the macrotextures, as well as the center-to-center distance of the two droplets, on the contact time. We found a new rebounding regime with significantly reduced contact times. We demonstrate that, as compared with impacting a smooth superhydrophobic surface, the contact time can be decreased by 41% for macrotexture S1 because of the asymmetric spreading and retraction of droplets motivated by the macrotexture. We also demonstrate that the new regime depends on the center-to-center distance and geometrical parameters of the macrotextures.
Record ID
Keywords
contact time, double-droplet, impact, macrotexture, superhydrophobic surface
Subject
Suggested Citation
Lin DJ, Zhang LZ, Yi MC, Wang X, Gao SR, Yang YR, Zheng SF, Wang XD. Contact Time of Double-Droplet Impacting Superhydrophobic Surfaces with Different Macrotextures. (2020). LAPSE:2020.1170v1
Author Affiliations
Lin DJ: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Zhang LZ: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Yi MC: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Wang X: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Gao SR: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Yang YR: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Zheng SF: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi [ORCID]
Wang XD: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Zhang LZ: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Yi MC: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Wang X: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Gao SR: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Yang YR: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Zheng SF: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi [ORCID]
Wang XD: Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, Chi
Journal Name
Processes
Volume
8
Issue
8
Article Number
E896
Year
2020
Publication Date
2020-07-26
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr8080896, Publication Type: Journal Article
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LAPSE:2020.1170v1
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External Link
doi:10.3390/pr8080896
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Version History
[v1] (Original Submission)
Nov 24, 2020
Verified by curator on
Nov 24, 2020
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v1
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https://psecommunity.org/LAPSE:2020.1170v1
Original Submitter
Calvin Tsay
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