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Electro-thermo-convection in a planar layer of dielectric liquid subjected to electrohydrodynamic conduction and thermal gradient

  • Zhonglin Du*
  • , Pedro A. Vazquez
  • , Jian Wu
  • *Corresponding author for this work
  • School of Energy Science and Engineering, Harbin Institute of Technology
  • University of Seville

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

Abstract

In this work, we numerically investigate the electro-thermal-convection phenomena induced by the simultaneous action of electrohydrodynamic conduction and a thermal gradient between two parallel plates. The coupled set of governing equations including the charge conservation equations and the Poisson equation for the electric potential are incorporated into the finite-volume framework of OpenFOAM. The influence of temperature on the physical properties of dielectric liquid has been considered. The effect of dielectric force and Coulomb force on the thermal convection has been investigated. Results show that the dielectric force advances the onset of Rayleigh-Bénard convection (RBC) and leads to the instability of RBC flow with the low Rayleigh number.

Original languageEnglish
Title of host publicationICDL 2023 - 22nd IEEE International Conference on Dielectric Liquids
PublisherIEEE Computer Society
ISBN (Electronic)9798350302172
DOIs
StatePublished - 2023
Externally publishedYes
Event22nd IEEE International Conference on Dielectric Liquids, ICDL 2023 - Worcester, United States
Duration: 25 Jun 202328 Jun 2023

Publication series

NameProceedings - IEEE International Conference on Dielectric Liquids
Volume2023-June
ISSN (Print)2153-3725
ISSN (Electronic)2153-3733

Conference

Conference22nd IEEE International Conference on Dielectric Liquids, ICDL 2023
Country/TerritoryUnited States
CityWorcester
Period25/06/2328/06/23

Keywords

  • dielectric force
  • dielectric liquid
  • electro-thermal-convection
  • electrohydrodynamic conduction
  • finite volume method

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