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Near Wall Deformation and Dynamics of Falling Droplets Under the Effect of Electric Field

[+] Author Affiliations
Esmaiil Ghasemisahebi, Soheil Soleimanikutanaei, Cheng-Xian Lin

Florida International University, Miami, FL

Hassan Bararnia

University of Illinois at Chicago, Chicago, IL

Paper No. IMECE2017-72221, pp. V007T09A025; 11 pages
doi:10.1115/IMECE2017-72221
From:
  • ASME 2017 International Mechanical Engineering Congress and Exposition
  • Volume 7: Fluids Engineering
  • Tampa, Florida, USA, November 3–9, 2017
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5842-4
  • Copyright © 2017 by ASME

abstract

In this paper, dynamics of the falling droplet under gravity near the wall has been studied numerically. Electrohydrodynamics (EHD) force has been applied to the falling drop to investigate the effect of electric field on its behavior. In order to study the effects of wall boundaries on falling drop dynamics the initial drop is placed close to side walls. The open-source volume-of-fluid solver, Gerris has been used due to its dynamic adaptive grid refinement feature. Three-dimensional study of drops falling under gravity and nonsymmetrical electric field for different ratios of density and viscosity have been studied on the drop dynamics. The numerical results of EHD field and falling drop have been validated with previous analytical, experimental and numerical data. The parameters that govern the dynamics are the Galilee (Ga) and the Bond (Bo) numbers.

Copyright © 2017 by ASME

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