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Permanent link (DOI): https://doi.org/10.7939/R36688S7T

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Mass-Mobility Measurements of Aircraft Particulate Matter Using a Novel Measurement Method: A Centrifugal Particle Mass Analyzer and Differential Mobility Spectrometer System Open Access

Descriptions

Other title
Subject/Keyword
Aircraft
Particulate Matter
CPMA
Mass-Mobility
Effective Density
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Johnson, Tyler J
Supervisor and department
Olfert, Jason (Mechanical Engineering)
Examining committee member and department
Lange, Carlos (Mechanical Engineering)
Kostiuk, Larry (Mechanical Engineering)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2013-09-25T15:53:00Z
Graduation date
2013-11
Degree
Master of Science
Degree level
Master's
Abstract
Mass-mobility measurements using a centrifugal particle mass analyzer (CPMA) and differential mobility spectrometer (DMS) are demonstrated. The CPMA, which classifies an aerosol by mass-to-charge ratio, is used upstream of a DMS, which measures the mobility size distribution of the mass-classified particles in real-time. Since the CPMA classifies particles by mass-to-charge ratio and multiply-charged particles are present, the particle mobility sizes of several different masses will be measured by the DMS. Therefore, a correction scheme is required to make accurate measurements. To validate this measurement scheme, two different CPMA-DMS systems were used to measure the known density of di(2ethylhexyl) sebacate (DEHS). The first system used a standard DMS500 (sDMS, Cambustion), while the second system used a modified DMS (mDMS), which had lower sizing uncertainties. The second configuration, a CPMA-mDMS system, was then used to measure the mass and mobility of aircraft particulate matter generated by CFM56-5B4-2P, CFM56-7B26 and PW4000-100 turbine engines.
Language
English
DOI
doi:10.7939/R36688S7T
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.
Citation for previous publication
Johnson, T.J, Symonds, J.P.R., Olfert, J.S. (2013). Mass-mobility measurements using a centrifugal particle mass analyzer and differential mobility spectrometer. Journal of Aerosol Science and Technology, 47(11):1215-1225.About to be submitted: Johnson, T.J, Olfert, J.S., Symonds, J.P.R., Johnson, M., Swanson, J., Thomson, K., Smallwood, G., Crayford, A. and Boies, A. (2013). Effective density and mass-mobility of aircraft particulate matter. Journal of Propulsion and Power.

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