Mass transfer during fluid sphere dissolution in an alternating electric field

Tov Elperin, Andrew Fominykh, Zakhar Orenbakh

Research output: Contribution to conferencePaperpeer-review

Abstract

In this study we considered mass transfer in a binary system comprising a stationary fluid dielectric sphere embedded into an immiscible dielectric liquid under the influence of an alternating electric field. Fluid sphere is assumed to be solvent-saturated so that an internal resistance to mass transfer can be neglected. Mass flux is directed from a fluid sphere to a host medium, and the applied electric field causes a creeping flow around the sphere. Droplet deformation under the influence of the electric field is neglected. The problem is solved in the approximations of a thin concentration boundary layer and finite dilution of a solute in the solvent. The thermodynamic parameters of a system are assumed constant. The nonlinear partial parabolic differential equation of convective diffusion is solved by means of a generalized similarity transformation, and the solution is obtained in a closed analytical form for all frequencies of the applied electric field. The rates of mass transfer are calculated for both directions of fluid motion - from the poles to equator and from the equator to the poles. Numerical calculations show essential (by a factor of 2-3) enhancement of the rate of mass transfer in water droplet - benzonitrile and droplet of carbontetrachloride - glycerol systems under the influence of electric field for a stagnant droplet. The asymptotics of the obtained solutions are discussed.

Original languageEnglish
Pages567-574
Number of pages8
DOIs
StatePublished - 1 Jan 2004
EventProceedings of the ASME Heat Transfer/Fluids Engineering Summer Conference 2004, HT/FED 2004 - Charlotte, NC, United States
Duration: 11 Jul 200415 Jul 2004

Conference

ConferenceProceedings of the ASME Heat Transfer/Fluids Engineering Summer Conference 2004, HT/FED 2004
Country/TerritoryUnited States
CityCharlotte, NC
Period11/07/0415/07/04

Keywords

  • Diffusion
  • Drop
  • Electric field
  • Extraction
  • Mass transfer
  • Taylor circulation

ASJC Scopus subject areas

  • Engineering (all)

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