76th Annual Meeting of the APS Division of Fluid Dynamics (November 19, 2023 — November 21, 2023)
P0042: Ensheathed Falling Particle
Authors
- Abdullah Abdal, 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
- Debashis Panda, 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, Universite Paris Saclay, Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire des Sciences du Numerique (LISN), 91400 Orsay, France
- Damir Juric, Universite Paris Saclay, Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire des Sciences du Numerique (LISN), 91400 Orsay, France
- Colm-Cille Caulfield, Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Centre for Mathematical Sciences, Wilberforce Road, Cambridge CB3 0WA, United Kingdom
- Omar Matar, Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom
DOI: https://doi.org/10.1103/APS.DFD.2023.GFM.P0042
We present three-dimensional Direct Numerical Simulations of a falling particle across an oil-water interface. An interfacial tail gradually forms past the particle, which is connected to the initial interface position.
Over time, the tail thins closer to the particle, which would cause the interface to pinch off and retract. The particle would then continue to settle, encapsulated by a layer of oil.
The presented color map depicts the vortical structures which arise due to the density and viscosity variations between the oil and the water phase.
DOI: https://doi.org/10.1103/APS.DFD.2023.GFM.P0042