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Numerical simulation of electrospray in the cone-jet mode

M. A. Herrada, J. M. López-Herrera, and A. M. Gañán-Calvo

E. J. Vega and J. M. Montanero

S. Popinet

  • Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos, Universidad de Sevilla, E-41092 Sevilla, Spain

  • Departamento de Ingeniería Mecánica, Energética y de los Materiales, Universidad de Extremadura, E-06006 Badajoz, Spain

  • National Institute of Water and Atmospheric Research, P.O. Box 14-901, Kilbirnie, Wellington, New Zealand

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Phys. Rev. E 86, 026305 – Published 8 August, 2012

DOI: https://doi.org/10.1103/PhysRevE.86.026305

Abstract

We present a robust and computationally efficient numerical scheme for simulating steady electrohydrodynamic atomization processes (electrospray). The main simplification assumed in this scheme is that all the free electrical charges are distributed over the interface. A comparison of the results with those calculated with a volume-of-fluid method showed that the numerical scheme presented here accurately describes the flow pattern within the entire liquid domain. Experiments were performed to partially validate the numerical predictions. The simulations reproduced accurately the experimental shape of the liquid cone jet, providing correct values of the emitted electric current even for configurations very close to the cone-jet stability limit.

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Phys. Rev. E 86, 026305– Published 8 August, 2012
  • Received 19 January 2012

©2012 American Physical Society

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