AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
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Wind Tunnel Experiment of Bacillus Spores Resuspension
JING QIAN, Babak Nasr, Matthew Brown, Meilu He, Morgan Minyard, Andrea R. Ferro, Goodarz Ahmadi, Suresh Dhaniyala, Clarkson University
Abstract Number: 534 Working Group: Aerosol Physics
Abstract Quantitative understanding is lacking for accurately modeling real-world outdoor biological particle resuspension processes. This experimental study quantifies particle resuspension for a range of substrates and particle types in a wind tunnel designed and fabricated to operate at high flowrates and variable humidity. The detachment of particles is determined as a function of shear velocity for each set of conditions. This presentation will describe the experimental methodology on spore preparation, deposition, resuspension and detection. Initial results include resuspension rate vs shear velocity for the detachment of Bacillus spores as compared with glass spheres and PSL particles from glass and stainless steel substrates under various flowrates and two different RH conditions. Approved for public release, distribution is unlimited.