In this paper, we experimentally investigated the dynamics of droplet impacts on liquid films to explore the influence of different fluid properties. We have altered the fluid of the film in which water drops impacted, using various liquids, such as water, silicon oil, glycerol, and ethanol. The aim was to observe how different fluid properties, including surface tension, viscosity, and miscibility, affected the drop impact behavior. We discovered distinct mechanisms for each combination of droplet and film liquid, highlighting the importance of fluid properties in drop impact phenomena. We have observed two types of interesting fluid dynamics: crown formation and central jet formation, depending on the miscibility of the fluids involved. We have observed that miscibility plays a major role in understanding and predicting the behavior of dynamics.

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Droplet Impact Dynamics on Liquid Films

  • Manglesh Singh,
  • Devranjan Samanta

摘要

In this paper, we experimentally investigated the dynamics of droplet impacts on liquid films to explore the influence of different fluid properties. We have altered the fluid of the film in which water drops impacted, using various liquids, such as water, silicon oil, glycerol, and ethanol. The aim was to observe how different fluid properties, including surface tension, viscosity, and miscibility, affected the drop impact behavior. We discovered distinct mechanisms for each combination of droplet and film liquid, highlighting the importance of fluid properties in drop impact phenomena. We have observed two types of interesting fluid dynamics: crown formation and central jet formation, depending on the miscibility of the fluids involved. We have observed that miscibility plays a major role in understanding and predicting the behavior of dynamics.