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A Numerical Study On The Underwater Apparent Contact Angle Of Oil Droplets On Microstructure Surface

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  • HYONCHOL CHOE

    (College of Petroleum Engineering, China University of Petroleum, No. 66 Changjiang West Road, Qingdao 266580, P. R. China†College of Mechanical Science and Technology, Kimchaek University of Technology, CAS, Pyongyang 999093, DPR Korea)

  • SONGHAK KIM

    (#x2020;College of Mechanical Science and Technology, Kimchaek University of Technology, CAS, Pyongyang 999093, DPR Korea)

  • CHOLHUAN O

    (#x2020;College of Mechanical Science and Technology, Kimchaek University of Technology, CAS, Pyongyang 999093, DPR Korea)

  • JISONG ZONG

    (#x2020;College of Mechanical Science and Technology, Kimchaek University of Technology, CAS, Pyongyang 999093, DPR Korea)

  • WONCHOL SONG

    (#x2020;College of Mechanical Science and Technology, Kimchaek University of Technology, CAS, Pyongyang 999093, DPR Korea)

Abstract

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.

Suggested Citation

  • Hyonchol Choe & Songhak Kim & Cholhuan O & Jisong Zong & Wonchol Song, 2020. "A Numerical Study On The Underwater Apparent Contact Angle Of Oil Droplets On Microstructure Surface," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 27(01), pages 1-9, January.
    • Handle: RePEc:wsi:srlxxx:v:27:y:2020:i:01:n:s0218625x19500951
    DOI: 10.1142/S0218625X19500951
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    Cited by:

    1. Chen, Xin & Zhang, Ying & Xu, Sheng & Dong, Fei, 2023. "Bibliometric analysis for research trends and hotspots in heat and mass transfer and its management of proton exchange membrane fuel cells," Applied Energy, Elsevier, vol. 333(C).

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