Spreading Dynamics of Droplet Impact on a Wedge-Patterned Biphilic Surface

被引：6
作者：
Yang, Yanjie [1 ]
Chen, Xiaoqian [2 ]
Huang, Yiyong [2 ]
机构：
[1] Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China
[2] Chinese Acad Mil Sci, Natl Innovat Inst Def Technol, Beijing 100071, Peoples R China
来源：
APPLIED SCIENCES-BASEL | 2019年 / 9卷 / 11期
关键词：
droplet impact; wedge-patterned; spreading diameter; surface tension; CONTACT-ANGLE; VISCOUS DROPLETS; WETTABILITY;
D O I：
10.3390/app9112214
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Featured Application This work can be used in the droplet harvest process, for droplet impact on a solid surface with a wettable gradient like rain harvest and spray collection, as well as for regulation in a microchannel by spontaneous droplet spreading and migration. Abstract The influence of apex angle and tilting angle on droplet spreading dynamics after impinging on wedge-patterned biphilic surface has been experimentally investigated. Once the droplet contacts the wedge-patterned biphilic surface, it spreads radially on the surface, with a tendency toward a more hydrophilic area. After reaching the maximum spreading diameter, the droplet contracts back. From the experimental results, the normalized diameter ) was found to be related with the Weber number ( as beta similar to root alpha tau.
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收藏
页数：14
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