74th Annual Meeting of the APS Division of Fluid Dynamics (November 21, 2021 — November 23, 2021)

V0086: Bi-Stability and Hysteresis in Transversely Excited Swirling Flows

  • Ravi Gupta, Indian Institute of Science, Bangalore
  • Rajat Gohiya, Indian Institute of Science, Bangalore
  • Pratikash Panda, Indian Institute of Science, Bangalore
DOI: https://doi.org/10.1103/APS.DFD.2021.GFM.V0086

It is a known phenomenon that swirling jets  transition to conical mode of vortex breakdown upon transverse acoustic excitation. To the best of our knowledge this is the first instance where we show that transverse acoustic forcing could lead to a hysteresis in swirling flows. The hysteresis leads to a bistable state between a bubble type vortex breakdown (BVB) and a conical vortex breakdown (CVB).

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