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

V0066: The beauty of drop impact phenomena

  • Durbar Roy, Indian Institute of Science, Bengaluru
  • Sophia M, Indian Institute of Science, Bengaluru
  • Saptarshi Basu, Indian Institute of Science, Bengaluru
DOI: https://doi.org/10.1103/APS.DFD.2022.GFM.V0066

The beauty of drop impact phenomena depicts the various spatiotemporal physics involved in a variety of drop impact phenomena. In particular, we show the drop impact phenomena at low-moderate Weber number on various solid substrates and immiscible liquid pools. Further, we also depict unique air crater formation on the droplet surface penetrating a high viscous immiscible pool. The craters forms as a response to the impulsive viscous drag acting on the droplet while penetrating the liquid pool. We show unique structure formation in the peripheral air disc beneath an impacting droplet on liquid pools. The structures are formed due to a combined effect of thin film and Saffman-Taylor instability. Further, the unstable interface destabilizes to form the central air dimple.

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