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Permanent link (DOI): https://doi.org/10.7939/R3N705

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Investigation of Effervescent Atomization Using Laser-Based Measurement Techniques Open Access

Descriptions

Other title
Subject/Keyword
Shadowgraph particle analyzer
Discretization error
Particle Image Velocimetry
Bubble formation
Droplet shape
Effervescent atomization
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Ghaemi, Sina
Supervisor and department
David S. Nobes (Mechanical Engineering)
Payam Rahimi (Mechanical Engineering)
Examining committee member and department
Alidad Amirfazli (Mechanical Engineering)
Sean Sanders (Chemical Engineering)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2009-04-28T17:26:10Z
Graduation date
2009-11
Degree
Master of Science
Degree level
Master's
Abstract
Effervescent atomization has been a topic of considerable investigation in the literature due to its important advantages over other atomization mechanisms. This work contributes to the development of both effervescent atomizers and also laser-based techniques for spray investigation In order to develop non-intrusive measurement techniques for spray applications, a procedure is suggested to characterize the shape of droplets using image-based droplet analyzers. Image discretization which is a major source of error in droplet shape measurement is evaluated using a simulation. The accuracy of StereoPIV system in conducting droplet velocity measurement in a spray field is also investigated. To assist in the design of effervescent atomizers, bubble formation during gas injection from a micro-tube into liquid cross-flow is investigated using a Shadow-PIV/PTV system. The generated spray fields of two effervescent atomizers which operate using a porous and a typical multi-hole air injector are compared using qualitative images and Shadow-PTV measurement.
Language
English
DOI
doi:10.7939/R3N705
Rights
License granted by Sina Ghaemi (ghaemi@ualberta.ca) on 2009-04-28T16:32:11Z (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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