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Heat transfer enhancement by an electrohydrodynamic plume induced by ion injection from a hyperbolic blade

  • Jian Wu*
  • , Philippe Traoré
  • , Christope Louste
  • , Alberto T. Pérez
  • , Pedro A. Vázquez
  • *Corresponding author for this work
  • Institut PPRIME
  • University of Seville

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The electrohydroyanmic (EHD) plume induced by charge injection from a hyperbolic blade into a dielectric liquid was considered to actively enhance heat transfer. We numerically studied an upward-facing hot plate with constant temperature cooled by an impinging ionic jet that results from a strong and autonomous injection. It is shown that the heat transfer rate expressed with the local and averaged Nusselt numbers are dramatically increased. In addition, we observe that the Nusselt number is independent of the Rayleigh number Ra (2.5×103 ≤ Ra ≤ 1.0×104) for all electric Rayleigh numbers T considered (5.0×102 ≤ T ≤ 2.0×104 ), which reflects the fully dominant role of the electric force.

Original languageEnglish
Title of host publicationProceedings of the 2014 IEEE 18th International Conference on Dielectric Liquids, ICDL 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479920631
DOIs
StatePublished - 2014
Externally publishedYes
Event2014 IEEE 18th International Conference on Dielectric Liquids, ICDL 2014 - Bled, Slovenia
Duration: 29 Jun 20143 Jul 2014

Publication series

NameProceedings of the 2014 IEEE 18th International Conference on Dielectric Liquids, ICDL 2014

Conference

Conference2014 IEEE 18th International Conference on Dielectric Liquids, ICDL 2014
Country/TerritorySlovenia
CityBled
Period29/06/143/07/14

Keywords

  • Electroconvection
  • dielectric liquid
  • heat transfer enhancement
  • ion injection
  • numerical analysis

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