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Aerodynamic droplet atomization model (ADAM)

Published online by Cambridge University Press:  27 February 2023

Isaac M. Jackiw Open the ORCID record for Isaac M. Jackiw [Opens in a new window]  and
Nasser Ashgriz Open the ORCID record for Nasser Ashgriz [Opens in a new window]
Isaac M. Jackiw
Affiliation:
Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada
Nasser Ashgriz*
Affiliation:
Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada
*
†Email address for correspondence: ashgriz@mie.utoronto.ca
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Abstract

The present work studies low viscosity twin-fluid atomization experimentally and analytically to characterize and predict the droplet size distribution of the spray. The study is based on experiments conducted using commercially available twin-fluid nozzles with water as the liquid. Shadowgraph images were used to visualize the near-nozzle flow while the droplet size distribution was measured in the far field using a Malvern Spraytec. To analytically model the atomization of the spray, the authors’ recent works on aerodynamic droplet breakup, which describe the formation and breakup of ligament and bag structures by multiple mechanisms, are extended to provide an analytical prediction of the droplet size distribution of the spray that is validated against the present experiments. The present model is developed to be a good physical representation of the spray behaviour at practical operating conditions. A Python implementation of the model has been deposited in a GitHub repository to accompany this work.

JFM classification

Drops and Bubbles: Aerosols/atomization
Type
JFM Papers
Information
Journal of Fluid Mechanics , Volume 958 , 10 March 2023 , A2
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Copyright
© The Author(s), 2023. Published by Cambridge University Press

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References

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