Author:
Li Wenhao,Cai Zishuo,Li Wenbo,Wang Pan,Zhang Aocheng
Abstract
Abstract
The droplet collision study on the dynamic superhydrophobic surface is of great significance in cleaning, corrosion, and other related fields and is one of the critical contents of the research. In this study, an investigation is carried out on the droplet rebound phenomena observed during collisions on a dynamic SiO2 superhydrophobic surface exhibiting a contact angle of 151°. Five different bounce kinds are shown in the results.Independent of the speed of surface motion, the Weber number causes a rise in the maximum spreading diameter of the droplet. As the speed of surface motion increases, the driving force of slip changes from shear force to lift force, and the slip distance increases rapidly with the speed of surface motion, and then increases slowly. The contact time decreases with an increase in the speed of the moving surface after the droplet strikes it, and the shear stress causes the droplet to deform asymmetrically, leading to quicker shrinkage. Three comparisons of theory, simulation and experiment are in good agreement.
Subject
Computer Science Applications,History,Education
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