Article
Effect of an axial electric field on the breakup of a leaky-dielectric liquid filament
Author/s | Rubio, M.
Ponce-Torres, Alberto Herrada Gutiérrez, Miguel Ángel Gañán-Calvo, Alfonso M. Montanero, J. M. |
Department | Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos |
Publication Date | 2021 |
Deposit Date | 2022-03-11 |
Published in |
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Abstract | We study experimentally and numerically the thinning of Newtonian leaky-dielectric filaments subjected to an axial electric field. We consider moderately viscous liquids with high electrical permittivity. We analyze the ... We study experimentally and numerically the thinning of Newtonian leaky-dielectric filaments subjected to an axial electric field. We consider moderately viscous liquids with high electrical permittivity. We analyze the influence of the electric field on the formation of satellite droplets from the breakup of the filaments in the experiments. The electric force delays the free surface pinching. Two electrified filaments with the same minimum radius are thin at the same speed regardless of when the voltage is applied. The numerical simulations show that the polarization stress is responsible for the pinching delay observed in the experiments. Asymptotically close to the pinching point, the filament pinching is dominated by the diverging hydrodynamic forces. The polarization stress becomes subdominant even if this stress also diverges at this finite-time singularity. © 2021 Author(s). |
Project ID. | PID2019–108278RB
GR18175 |
Citation | Rubio, M., Ponce-Torres, A., Herrada Gutiérrez, M.Á., Gañán-Calvo, A.M. y Montanero, J.M. (2021). Effect of an axial electric field on the breakup of a leaky-dielectric liquid filament. Physics of Fluids, 33 (91), Article number 092114. |
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