Estimating droplet charge in numerical simulations of charged sprays

Antoni Brentjes*, Artur K. Pozarlik, Gerrit Brem

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

A novel method for estimating droplet charge in numerical simulations of conductively and inductively charged sprays is presented. This method is based on balancing the effective electric field at the sprayer nozzle with the global electric field induced by the charged droplets. The global approach avoids the need for computationally expensive local resolution of the spray formation region, allowing it to be used in Eulerian–Lagrangian simulations of high-flowrate sprays. The method is validated against experimental data from literature, proving it can predict droplet charge with reasonable engineering accuracy, over a wide range of spray parameters, for conductive spray liquids.

Original languageEnglish
Article number103591
Number of pages9
JournalJournal of electrostatics
Volume112
Early online date19 Apr 2021
DOIs
Publication statusPublished - Jul 2021

Keywords

  • Computational fluid dynamics
  • Droplet charge
  • Electrostatic spray
  • Spray current

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