Theoretical Determination of Droplet Diameters and Flow Rates in Sprays and Aerosols

Maksim Mezhericher, Howard A. Stone

Research output: Contribution to conferencePaperpeer-review

Abstract

In our recent work we demonstrated a novel liquid atomization process generating micro-sprays and aerosols of submicron-diameter droplets for pure solvents, suspensions, and solutions. Our novel atomization process is based on disintegration by gas jets of thin liquid films formed as bubbles on a liquid surface. In this paper we show that the diameters and flow rates of the produced droplets are governed by the interplay of process timescales including capillary breakup, liquid viscosity, and gas jet pressure. Timescale ratios can be converted into the ratios of specific energies and into the ratios of specific energy rates provided by the gas jets and dissipated by the atomized liquid. Using those ratios, we develop new theoretical approach to determine droplet diameters and flow rates in sprays and aerosols and intoduce atomization diagrams. The comparison between theoretically predicted and measured droplet diameters and droplet flow rates for various liquids (water, gasoline, diesel and others) demonstrated good agreement for the new liquid atomization process generating micro-sprays and aerosols of submicron-diameter droplets.

Original languageEnglish (US)
StatePublished - Aug 31 2021
Externally publishedYes
Event15th Triennial International Conference on Liquid Atomization and Spray Systems, ICLASS 2021 - Edinburgh, United Kingdom
Duration: Aug 29 2021Sep 2 2021

Conference

Conference15th Triennial International Conference on Liquid Atomization and Spray Systems, ICLASS 2021
Country/TerritoryUnited Kingdom
CityEdinburgh
Period8/29/219/2/21

All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films

Keywords

  • Atomization diagram
  • diameter of droplet
  • dimensionless number
  • flow rate

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