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

P0027: Self Inducing Subharmonic Waves

Authors
  • Debashis Panda, Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom
  • Lyes Kahouadji, Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom
  • Seungwon Shin, Department of Mechanical and System Design Engineering, Hongik University, Seoul 04066, Republic of Korea
  • Jalel Chergui, Université Paris Saclay, Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdi sciplinaire des Sciences du Numérique (LISN), 91400 Orsay, France
  • Damir Juric, Université Paris Saclay, Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdi sciplinaire des Sciences du Numérique (LISN), 91400 Orsay, France
  • Omar Matar, Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom
DOI: https://doi.org/10.1103/APS.DFD.2022.GFM.P0027

High mode excitation of sessile drops present coupled harmonic-subharmonic waves on the interface. In the past, the fluid dynamics community observed that the azimuthal subharmonic waves grow on the harmonic axisymmetric waves from the periphery. Such subharmonic responses may be a classical signature of Faraday waves. Nevertheless, we believe that rather than the harmonics of the vibrated surface, it is the harmonics of the interfacial waves that form the azimuthal subharmonic response. Therefore, we present a self inducing phenomenon and conclude that all subharmonic waves are not Faraday waves.  

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