## 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 language | English |
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Pages | 567-574 |

Number of pages | 8 |

DOIs | |

State | Published - 1 Jan 2004 |

Event | Proceedings of the ASME Heat Transfer/Fluids Engineering Summer Conference 2004, HT/FED 2004 - Charlotte, NC, United States Duration: 11 Jul 2004 → 15 Jul 2004 |

### Conference

Conference | Proceedings of the ASME Heat Transfer/Fluids Engineering Summer Conference 2004, HT/FED 2004 |
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Country/Territory | United States |

City | Charlotte, NC |

Period | 11/07/04 → 15/07/04 |

## Keywords

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

## ASJC Scopus subject areas

- Engineering (all)