70th Annual Meeting of the APS Division of Fluid Dynamics (November 19, 2017 — November 21, 2017)

V0073: Formation of thick and thin jets by impacting solid body

  • Nayoung Kim, Seoul National University
  • Hyungmin Park, Seoul National University
DOI: https://doi.org/10.1103/APS.DFD.2017.GFM.V0073

When a solid body enters the liquid (water), very complex deformation of free surface results in the cavity and jets below and above the free surface. Here, we classify the jet formation and explain its mechanism through a high-speed imaging of a water entry of solid objects with various aspect ratio. The film dynamics governed by the interplay between inertia, surface tension, and viscosity, and the flow induced the moving body are essenetial to understand this beautiful phenomena.

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