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Influence of Bubble Size on an Effervescent Atomization Open Access


Other title
bubble size, effervescent atomization, droplet size
Type of item
Degree grantor
University of Alberta
Author or creator
Gomez, Johana
Supervisor and department
Dr. Olfert, Jason (Mechanical Engineering)
Dr. Fleck, Brian (Mechanical Engineering)
Examining committee member and department
Dr. Olfert, Jason (Mechanical Engineering)
Dr. Fleck, Brian (Mechanical Engineering)
Dr. Sander, Sean (Chemical and Materials Engineering)
Dr. Nobes, David (Mechanical Engineering)
Department of Mechanical Engineering

Date accepted
Graduation date
Master of Science
Degree level
An experimental investigation was performed to study the influence of the bubble size on an effervescent atomization. Experiments were conducted in horizontal facility with a 25.4mm diameter feeding pipe using water and air as the working fluids that were sprayed through an effervescent nozzle. Water flow rates from 113 to 189 kg/min and air to liquid mass ratios from 1% to 4% were selected. High speed photographs, of the bubbles in the feeding conduit and of the resulting droplets on the spray, were taken to use the particle projected areas to estimate their sizes. A monotonic positive correlation was found between the bubble size and the droplet size, in a fairly narrow range of feed flow void fractions. A bubble size sensitivity parameter was defined. Knowledge of the droplet behaviour provides data to enhance the design and operating conditions of the atomization process and a means to control droplet size.
License granted by Johana Gomez ( on 2010-09-29T04:33:23Z (GMT): Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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