Skip to main content
Article thumbnail
Location of Repository

Direct numerical simulation of forced flow dielectric EHD within charge injection atomizers

By J.S. Shrimpton and Agissilaos Kourmatzis


A charge injection atomizer functions by introducing electric charge discharged from a high voltage electrode into a dielectric liquid, which subsequently atomizes the ejected liquid jet. Atomizer evolution thus far has proceeded through trial and error analysis of the experimentally measured electrical characteristics of the atomizer and of the quality of atomization. Within the atomizer, a coupled space charge and electric field exist, which can alter the internal flow pattern, thus creating electrohydrodynamic (EHD) instabilities that affect atomizer operation. Such a system has not been simulated in the past under forced flow conditions. In this work we simulate the internal flow of such a charge injection device in two dimensions; using experimental based boundary conditions. Initial results indicate that in the linear injection regime defined by the experimental data, the flow is only slightly unstable but in the transitional and highly non-linear regimes, the coupled space charge and electric field produce more instability in the liquid that must be investigated furthe

Topics: TK
Year: 2010
OAI identifier:
Provided by: e-Prints Soton

Suggested articles


  1. (2006). Acceleration and dissipation statistics of numerically simulated isotropic turbulence”, doi
  2. (1995). An Introduction to Computational Fluid Dynamics:
  3. (1995). and D.Hu, “Electrostatically atomized hydrocarbon sprays”, doi
  4. Basic concepts and equations doi
  5. (1999). Characterization of charged hydrocarbon sprays for application in combustion systems”, doi
  6. (2009). Charge Injection Systems, doi
  7. (1971). Charge transport by self-generated turbulence in insulating liquids submitted to unipolar injection”, doi
  8. (1991). Coulomb-Driven convection in electrohydrodynamics”, doi
  9. (1985). Creation of charge carriers in nonpolar liquids”, doi
  10. (2004). Design issues concerning charge injection atomizers”, doi
  11. Dynamics of electrically charged transient evaporating evaporating sprays”, doi
  12. (2010). Electrical and spray characteristics of a multi-orifice charge injection atomizer for electrically insulating liquids”, doi
  13. (2009). Electrical Performance of a Charge Injection Atomizer using Viscous Organic Oils”, doi
  14. (2006). Electrical Performance of Charge Injection Electrostatic Atomizers”, doi
  15. (1996). Electrohydrodynamic instability and motion induced by injected space charge in insulating liquids”, doi
  16. (2009). Electrohydrodynamics and charge injection atomizers: a review of the governing equations and turbulence”, doi
  17. (2003). Electrohydrodynamics of charge injection atomization: Regimes and fundamental limits”, doi
  18. (1995). Electrostatic Atomization and Combustion of Hydrocarbon Oils, doi
  19. (1983). Electrostatic Atomizing Device”,
  20. (1980). Electrostatic spraying of liquid insulators”, doi
  21. (2009). Estimation of the diameter-charge distribution in polydisperse electrically charged sprays of electrically insulating liquids”, doi
  22. (1976). Generation of charged drops of insulating liquids by electrostatic spraying”, doi
  23. (2001). Internal electrification of Diesel oil injectors”, doi
  24. (2008). Numerical analysis of the stability of the electrohydrodynamic (EHD) electroconvection between two plates”, doi
  25. (2003). Numerical experiments on strongly turbulent thermal convection in a slender cylindrical cell”, doi
  26. (2009). On the quantification of preferential accumulation”, doi
  27. (2003). Performance of a Charge Injection Electrostatic Atomizer and Spray Characteristics, Ph.D. thesis,
  28. (2010). Point-to-Plane and Plane-to-Plane Electrostatic Charge Injection Atomization for Insulating Liquids,
  29. (2003). Pulsed charged sprays: applications to DISI engines during early injection”, doi
  30. (2006). Reynolds number dependence of Lagrangian statistics in large numerical simulations of isotropic turbulence”, doi
  31. (2006). Spray Characteristics of Charge Injection Electrostatic Atomizers with Small-Orifice Diameters”, doi
  32. (1984). The electrostatic atomization of hydrocarbons”, doi
  33. (1986). The Theory and Practice of Electrostatic Spraying”,

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.