75th Annual Meeting of the APS Division of Fluid Dynamics (November 20, 2022 — November 22, 2022)

P0039: Mushroom Vortex Street

Authors
  • Meng Shi, High-Speed Fluids Imaging Laboratory, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST)
  • Sigurdur Thoroddsen, High-Speed Fluids Imaging Laboratory, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST)
DOI: https://doi.org/10.1103/APS.DFD.2022.GFM.P0039

When a liquid drop impacts on a thin miscible liquid film, it breaks into a central drop and a surrounding liquid ring. Through high-speed imaging, we observed the formation of a street of mushroom vortex in the liquid ring at initial contact. This street is created by the undulations of the liquid interfaces and reinforced by the surface tension instability following the impact.

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