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Droplet Impact on a Moving Thin Film with Pseudopotential Lattice Boltzmann Method

Author

Listed:
  • Jinchao He
  • Hao Yuan
  • Xiaolong He
  • Chunhang Xie
  • Haonan Peng
  • Ruichang Hu

Abstract

The pseudopotential lattice Boltzmann method (LBM) with a tunable surface tension term is applied to study a droplet impact on a moving thin film. The effects of dimensionless parameters on the upstream and downstream crown evolution are studied, including Reynolds number ( ), Weber number ( ), liquid film thickness, and horizontal velocity of the liquid film. The movement of the liquid film causes the asymmetry development of the upstream and downstream crown. Both the instability of upstream and downstream crowns increases with the increase of and , and the upstream crown becomes more prone to break up. And a critical value of film thickness exists with the height of the upstream and downstream liquid crowns reaches the maximum value. And the velocity of liquid film restrains the development of the height of the upstream and downstream crowns, but it promotes the growth of the crown radius.

Suggested Citation

  • 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.
    • Handle: RePEc:hin:jnlmpe:1801639
    DOI: 10.1155/2020/1801639
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    Cited by:

    1. 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.

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