Numerical simulation of a falling droplet surrounding by air under electric field using VOF method: A CFD study

Mirollah Hosseini; Hossein Arasteh; Hamid Hassanzadeh Afrouzi; Davood Toghraie

doi:10.1016/j.cjche.2020.07.048

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Numerical simulation of a falling droplet surrounding by air under electric field using VOF method: A CFD study

Fluid Dynamics and Transport Phenomena | Updated：2026-01-06

- Numerical simulation of a falling droplet surrounding by air under electric field using VOF method: A CFD study
- Chinese Journal of Chemical Engineering Vol. 28, Issue 12, Pages: 2977-2984(2020)
- Affiliations：
  
  1. Department of Mechanical Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Mazandaran,Iran
  2. Department of Mechanical Engineering, Isfahan University of Technology, Isfahan,Iran
  3. Babol Noshirvani University of Technology, Babol,Iran
  4. Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr,Iran
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.07.048
  CLC：
- Published：2020
- Accepted：
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Mirollah Hosseini, Hossein Arasteh, Hamid Hassanzadeh Afrouzi, Davood Toghraie. Numerical simulation of a falling droplet surrounding by air under electric field using VOF method: A CFD study[J]. Chinese Journal of Chemical Engineering, 2020, 28(12): 2977-2984.
DOI：

Mirollah Hosseini, Hossein Arasteh, Hamid Hassanzadeh Afrouzi, Davood Toghraie. Numerical simulation of a falling droplet surrounding by air under electric field using VOF method: A CFD study[J]. Chinese Journal of Chemical Engineering, 2020, 28(12): 2977-2984. DOI： 10.1016/j.cjche.2020.07.048.

摘要

Abstract

This is a numerical study of a falling droplet surrounding by air under the electric field modeled with finite volume method by means of CFD. The VOF method has been employed to model the two-phase flow of the present study. Various capillary numbers are investigated to analyze the effects of electric field intensity on the falling droplet deformation. Also

the effects of electric potential on the heat transfer coefficient have been examined. The obtained results showed that by applying the electric field at a capillary number of 0.2 the droplet tends to retain its primitive shape as time goes by

with a subtle deformation to an oblate form. Intensifying the electric field to a capillary number of 0.8 droplet deformation is almost insignificant with time progressing; however

further enhancement in capillary number to 2 causes the droplet to deform as a prolate shape and higher values of this number intensify the prolate form deformation of the droplet and result in pinch-off phenomenon. Ultimately

it is showed that as the electric potential augments the heat transfer coefficient increases in which for electric potential values higher than 2400 V the heat transfer coefficient enhances significantly.

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