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Sizing and Positioning Algorithm for 1 µm to 10 µm Particles Using Shadowgraphy

[+] Author Affiliations
Michael J. Robinson, Zakaria Mahmud, Orven F. Swenson, Justin Hoey

North Dakota State University, Fargo, ND

Paper No. IMECE2013-65286, pp. V010T11A053; 5 pages
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 10: Micro- and Nano-Systems Engineering and Packaging
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5639-0
  • Copyright © 2013 by ASME


Measuring flows of aerosol particles of less than 10 μm diameter has proven a challenge in the past. Previously, our work included a brief review of the current state-of-art for aerosol measurements where accurate sizing was limited to particles greater than 5 μm. We developed a sizing and positioning algorithm (SPA) to accurately calculate both the diameter of a spherical particle, and the relative position of that particle to the object plane of the imaging camera for particles down to 3 μm in diameter. Our current work further extends the measurement range down to 1 μm particles. This algorithm has great benefit for the scientific community interested in small-particle aerosol flows.

Copyright © 2013 by ASME



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