期刊
ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS
卷 16, 期 1, 页码 1796-1812出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/19942060.2022.2116488
关键词
Droplets; lattice boltzmann method; wetting gradient; circumferential surface; shedding
资金
- National Natural Science Foundation of China [51976127]
The study found that the best way to accelerate droplet merging and shedding on a gradient wetting circular surface is to apply a wetting gradient, which can accelerate this process. Additionally, the velocity of droplets merging and shedding increases with the wetting gradient, and the more hydrophilic the original surface, the better the optimization effect of accelerating drainage by applying a wetting gradient.
A lattice Boltzmann method (LBM) based on Shan-Chen pseudo-potential model is used to investigate the process of droplets merging and shedding on a gradient wetting circular surface. The effects of wetting gradient, radius, and radius ratio on droplet merging and shedding were mainly explored. The results show that applying a wetting gradient on the circumferential surface can accelerate the process of droplet merging and shedding. The velocity of droplets merging and shedding increase with the increase of the wetting gradient. The more hydrophilic the original surface, the better the optimization effect of accelerating drainage is by applying a wetting gradient. The radius and radius ratio significantly affect droplets merging and shedding on the gradient wetting surface. The larger the radius and radius ratio, the shorter the droplets merging and shedding time.
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