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Permanent link (DOI): https://doi.org/10.7939/R3DF6K82X

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Investigation of Determining Velocity Profiles in Microfluidic Channel Using Micro PIV Open Access

Descriptions

Other title
Subject/Keyword
Micro PIV
Velocity Measurement
Microfluidic
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Behboodi, Fahimeh
Supervisor and department
Nobes, David (Mechanical Engineering)
Examining committee member and department
Lipsett, Michael (Mechanical Engineering)
Tsai, Peichun Amy (Mechanical Engineering)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2015-07-06T09:41:24Z
Graduation date
2015-11
Degree
Master of Science
Degree level
Master's
Abstract
An investigation of the velocity profile in a microscale (<5mm) channel using micro PIV technique is presented. Measuring the velocity profile in the microchannel becomes increasingly important with the improved attention to microscale devices. Theory dictates that flow in the channel has a parabolic velocity profile according to Navier Stokes assumptions and formulas. The channel which was used in this study had a scale of 0.8 mm width and 2 mm length. Flow, seeded with hollow sphere particles, is pumped through the channel. Micro particle image velocimetry measured the velocity profile by measuring movement of particles in one interrogation window over time and calculate velocity related to each window. Different algorithms for processing data including various interrogation window sizes and shapes were determined using commercial software (DaVis 8.0.7, LaVision GmbH) to compare results of the measured velocity profile with theory. The aim was to determine the impact of the PIV processing approach on the validity of the velocity profile in the near wall region. Effect of different window shapes and sizes were investigated and realized that the smaller window size has more velocity profile compatible with theory near the wall, and changes in the interrogation windows do not have so much influence on the velocity profile near boundary. At the end the agreement of the experimental results with theory is acceptable and shows different errors associated to the near boundary velocity profile in those methods.
Language
English
DOI
doi:10.7939/R3DF6K82X
Rights
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. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before 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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