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Dynamic characteristics of droplets impacting an inclined wall based on a front-tracking method

文献类型：期刊论文

作者Zhang, Ying3; Zhao, Shuting3; Liu, Yao3; Tu, Yuwei3; Ke, Zhaoqing3; Tian, Yuan2,3; Lu, Min1; Lu M(卢敏)
刊名PHYSICS OF FLUIDS
出版日期2024-05-01
卷号36期号:5页码:16
ISSN号1070-6631
DOI10.1063/5.0211388
通讯作者Ke, Zhaoqing(kzqing@ncu.edu.cn) ; Tian, Yuan(yuan.tian@dmu.ac.uk) ; Lu, Min(lumin@imech.ac.cn)
英文摘要In the current study, the dynamic characteristics of droplets impacting a hydrophilic/hydrophobic inclined wall are investigated using the front-tracking method. The morphological and kinematic features of the droplets are examined across various contact angles ( theta), low Weber numbers ( We <= 10), and inclination angles ( alpha). A sequence of events, including deposition, spreading, contraction, rebound, and subsequent re-spreading, is observed when a droplet impacts a hydrophobic wall, according to the results. The droplet exhibits both a small dimensionless spreading area ( A *) and significant fluctuation, along with a noticeable slip on the wall. As W e increases, the spread and rebound effects become more pronounced, and the slipping velocity also increases. As alpha increases, the slipping velocity becomes greater, and both A * and the dimensionless tangential spreading diameter ( beta) decrease. When a droplet impacts a hydrophilic wall, continuous deposition, spreading, and a subtle slip with inconspicuous rebound are observed. As W e increases, A * expands at an accelerating rate. Furthermore, the wetting effect of hydrophilic surfaces on droplets cannot be overlooked. Consequently, it also shows that as alpha increases, there is a larger diffusion range along the wall with a longer diffusion film and a larger beta. Such behaviors stand in contrast to a droplet impacting a hydrophobic wall.
WOS关键词MAXIMUM SPREADING FACTOR ; WATER DROPLET ; VISCOUS DROPLETS ; SOLID-SURFACE ; COLLISION ; FLUID ; ANGLE
资助项目National Natural Science Foundation of China10.13039/501100001809[52166009] ; National Natural Science Foundation of China10.13039/501100001809[12372246] ; National Natural Science Foundation of China[20232BAB204057] ; Natural Science Foundation of Jiangxi Province
WOS研究方向Mechanics ; Physics
语种英语
WOS记录号WOS:001224542400006
资助机构National Natural Science Foundation of China10.13039/501100001809 ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangxi Province
源URL[http://dspace.imech.ac.cn/handle/311007/95426]  
专题力学研究所_非线性力学国家重点实验室
通讯作者Ke, Zhaoqing; Tian, Yuan; Lu, Min
作者单位1.Inst Mech, Chinese Acad Sci, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
2.De Montfort Univ, Inst Energy & Sustainable Dev IESD, Sch Engn & Sustainable Dev, Leicester LE1 9BH, England
3.Nanchang Univ, Sch Adv Mfg, Nanchang 330031, Jiangxi, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Ying,Zhao, Shuting,Liu, Yao,et al. Dynamic characteristics of droplets impacting an inclined wall based on a front-tracking method[J]. PHYSICS OF FLUIDS,2024,36(5):16.
APA Zhang, Ying.,Zhao, Shuting.,Liu, Yao.,Tu, Yuwei.,Ke, Zhaoqing.,...&卢敏.(2024).Dynamic characteristics of droplets impacting an inclined wall based on a front-tracking method.PHYSICS OF FLUIDS,36(5),16.
MLA Zhang, Ying,et al."Dynamic characteristics of droplets impacting an inclined wall based on a front-tracking method".PHYSICS OF FLUIDS 36.5(2024):16.

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来源：力学研究所

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