中文版 | English
Title

Mobility of trapped droplets within porous surfaces

Author
Corresponding AuthorYu,Peng
Publication Years
2022-12-31
DOI
Source Title
ISSN
0009-2509
EISSN
1873-4405
Volume264
Abstract
Droplet mobility is essential in a wide range of engineering applications, e.g., fog collection and self-cleaning surfaces. For structured surfaces to achieve superhydrophobicity, the removal of stains adhered within the microscale surface features strongly determines the functional performance and durability. In this study, we numerically investigate the mobility of the droplet trapped within porous surfaces. Through simulations covering a wide range of flow conditions and porous geometries, three droplet mobility modes are identified, i.e., the stick–slip, crossover, and slugging modes. To quantitatively characterise the droplet dynamics, we propose a droplet-scale capillary number that considers the driving force and capillary resistance. By comparing against the simulation results, the proposed dimensionless number presents a strong correlation with the leftover volume. The dominating mechanisms revealed in this study provide a basis for further research on enhancing surface cleaning and optimising design of anti-fouling surfaces.
Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
First ; Corresponding
Funding Project
National Natural Science Foundation of China[12172163];National Natural Science Foundation of China[91852205];
WOS Research Area
Engineering
WOS Subject
Engineering, Chemical
WOS Accession No
WOS:000875725900002
Publisher
ESI Research Field
CHEMISTRY
Scopus EID
2-s2.0-85139333842
Data Source
Scopus
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/406154
DepartmentDepartment of Mechanics and Aerospace Engineering
Affiliation
1.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,China
2.School of Civil Engineering,The University of Sydney,Australia
3.State Key Laboratory for Strength and Vibration of Mechanical Structures,Xi'an,China
4.Department of Mechanics,KTH Royal Institute of Technology,Stockholm,100 44,Sweden
5.The University of Sydney Nano Institute (Sydney Nano),The University of Sydney,2006,Australia
First Author AffilicationDepartment of Mechanics and Aerospace Engineering
Corresponding Author AffilicationDepartment of Mechanics and Aerospace Engineering
First Author's First AffilicationDepartment of Mechanics and Aerospace Engineering
Recommended Citation
GB/T 7714
Suo,Si,Zhao,Haibo,Bagheri,Shervin,et al. Mobility of trapped droplets within porous surfaces[J]. CHEMICAL ENGINEERING SCIENCE,2022,264.
APA
Suo,Si,Zhao,Haibo,Bagheri,Shervin,Yu,Peng,&Gan,Yixiang.(2022).Mobility of trapped droplets within porous surfaces.CHEMICAL ENGINEERING SCIENCE,264.
MLA
Suo,Si,et al."Mobility of trapped droplets within porous surfaces".CHEMICAL ENGINEERING SCIENCE 264(2022).
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