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Numerical Simulation of Single Droplet Impingement upon Dynamic Liquid Film Obliquely

Author

Listed:
  • Shanshan Yang

    (Three Gorges Mathematical Research Center, China Three Gorges University, Yichang 443002, China
    College of Science, China Three Gorges University, Yichang 443002, China)

  • Quanyuan Zeng

    (Three Gorges Mathematical Research Center, China Three Gorges University, Yichang 443002, China
    College of Science, China Three Gorges University, Yichang 443002, China)

  • Xiaohua Zhang

    (Three Gorges Mathematical Research Center, China Three Gorges University, Yichang 443002, China
    College of Science, China Three Gorges University, Yichang 443002, China)

  • Chunzhu Dong

    (Science and Technology on Electromagnetic Scattering Laboratory, Beijing Institute of Environmental Features, Beijing 100854, China)

  • Ling Guan

    (Science and Technology on Electromagnetic Scattering Laboratory, Beijing Institute of Environmental Features, Beijing 100854, China)

Abstract

To better understand the application of droplet impingement in industry and agriculture, in this paper, the coupled level set and volume of fluid ( C L S V O F ) method is applied to study droplet oblique impact on a dynamic liquid film. The conclusions are the following: the downstream crown height increases and then decreases as the impact angle increases, whereas upstream crown height and spreading length decrease significantly; moreover, the spreading length and upstream crown height increase with the increase of film velocity, while the downstream crown height decreases instead. The increase of gas density inhibits both upstream and downstream crowns. When the fluid viscosity decreases or the impact velocity increases, the crown height increases significantly, which easily leads to crown rupture or droplet splash. The increase in impact velocity leads to an increase in spreading length; however, viscosity has almost no effect on the spreading length.

Suggested Citation

  • Shanshan Yang & Quanyuan Zeng & Xiaohua Zhang & Chunzhu Dong & Ling Guan, 2022. "Numerical Simulation of Single Droplet Impingement upon Dynamic Liquid Film Obliquely," Mathematics, MDPI, vol. 10(17), pages 1-16, September.
    • Handle: RePEc:gam:jmathe:v:10:y:2022:i:17:p:3193-:d:906394
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    References listed on IDEAS

    as
    1. Jinchao He & Hao Yuan & Xiaolong He & Chunhang Xie & Haonan Peng & Ruichang Hu, 2020. "Droplet Impact on a Moving Thin Film with Pseudopotential Lattice Boltzmann Method," Mathematical Problems in Engineering, Hindawi, vol. 2020, pages 1-15, July.
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