Influence of viscosity, surface and interfacial tensions on the liquid droplet collisions

N. E. Shlegel, P. P. Tkachenko, P. A. Strizhak

Research output: Contribution to journalArticle

Abstract

In this paper, we present the results of experimental research into the influence of viscosity, surface and interfacial tension of the liquid on the position of transition boundaries between droplet interaction regimes and main characteristics (number and dimensions) of child droplets. We produce collision regime maps using the dimensionless linear interaction parameter, the Weber and Ohnesorge numbers. The key liquid characteristics are varied in the following ranges: dynamic viscosity 0.0014–0.0063 Pa·s; surface tension 0.0275–0.07269 N/m; interfacial tension 0.00341–0.04257 N/m. Water, glycerol, Diesel fuel, stabilizers, and emulsifiers are used to produce solutions and emulsions. The main findings describe how viscosity, surface tension, and interfacial tension affect the dimensions of child droplets together and separately. The findings obtained contribute to developing the chemical and petrochemical technologies based on collisions of the droplets of various compositions as well as the technologies of secondary atomization of droplets.

Original languageEnglish
Article number115639
JournalChemical Engineering Science
Volume220
DOIs
Publication statusPublished - 20 Jul 2020

Keywords

  • Child droplets
  • Droplet collisions
  • Interaction regimes
  • Interfacial tension
  • Surface tension
  • Viscosity

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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