A NUMERICAL STUDY ON THE UNDERWATER APPARENT CONTACT ANGLE OF OIL DROPLETS ON MICROSTRUCTURE SURFACE

被引：8
|
作者：
Choe, Hyonchol [1 ,2 ]
Kim, Songhak [2 ]
Cholhuan, O. [2 ]
Zong, Jisong [2 ]
Song, Wonchol [2 ]
机构：
[1] China Univ Petr, Coll Petr Engn, 66 Changjiang West Rd, Qingdao 266580, Peoples R China
[2] Kimchaek Univ Technol, CAS, Coll Mech Sci & Technol, Pyongyang 999093, North Korea
来源：
SURFACE REVIEW AND LETTERS | 2020年 / 27卷 / 01期
关键词：
Microstructure surface; underwater contact angle; oil-water separation; roughness factor; oleophilic; oleophobic; OIL/WATER SEPARATION; WATER; IMPACT; CASSIE; SUPEROLEOPHOBICITY; MESH;
D O I：
10.1142/S0218625X19500951
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study, the apparent contact angles of oil droplets on the rough surfaces in water were numerically studied using the Volume of Fluid (VOF) model. The results showed that the roughness of the surface affected the wettability. By increasing the roughness of the surface, the oleophilicity of the oleophilic surface and the oleophobicity of the oleophobic surface could be increased. Furthermore, the applicability and limitations of the prediction of the underwater apparent contact angle of the oil droplet by the contact angle model were investigated by 3D numerical simulations. It suggests that Wenzel model can accurately predict the underwater apparent contact angle of oil droplets on all the oleophilic, neutral and oleophobic surfaces, and Cassie model can only be applied to the oleophobic surface and Cassie-Baxter model can only be applied to the oleophilic surface.
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收藏
页数：9
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