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Simulation of dynamic characteristics of droplet impact on liquid film

Author

Listed:
  • Guo Yali
  • Wei Lan
  • Shen Shengqiang
  • Chen Guiying

Abstract

A physical and mathematical model is established to simulate a single droplet impact onto a thin horizontal liquid film by using coupled Level Set and volume of fluid method, which has advantages in acquisition of interface geometrical parameters and keeping mass conservation. The evolution after the droplet impact is obtained together with isopiestic and velocity field at different parameters including impact velocity, droplet diameter and liquid film thickness. Influences of Weber number (We number), droplet size and film thickness on the crown diameter and crown height are acquired, and the results indicate that the crown diameter and height could be increased by increasing We number or by reducing film thickness. Furthermore, bubble entrainment phenomenon when the droplet impinges the liquid film are captured successfully and discussed. It is found that increment of both impact We number and droplet diameter could help the emerging of bubble rings.

Suggested Citation

  • Guo Yali & Wei Lan & Shen Shengqiang & Chen Guiying, 2014. "Simulation of dynamic characteristics of droplet impact on liquid film," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 9(2), pages 150-156.
    • Handle: RePEc:oup:ijlctc:v:9:y:2014:i:2:p:150-156.
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctu019
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