AAAR 36th Annual Conference October 16 - October 20, 2017 Raleigh Convention Center Raleigh, North Carolina, USA
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Wind Tunnel Experiment of Bacillus Spores Resuspension
JING QIAN, Babak Nasr, Meilu He, Kavindra Kumaragama, Matthew Brown, Morgan Minyard, Andrea R. Ferro, Goodarz Ahmadi, Suresh Dhaniyala, Clarkson University
Abstract Number: 503 Working Group: Bioaerosols
Abstract Quantitative understanding for accurate modeling of real-world outdoor biological particle resuspension processes is lacking. The current experimental study quantifies particle resuspension for a range of substrates and particle types in a wind tunnel designed and fabricated to operate at high flow rates and variable humidity. The detachment of particles as a function of shear velocity for each set of conditions is measured. The experimental methodology for spore preparation, deposition, resuspension and detection are described. 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 flow rates and two different RH conditions are presented. Approved for public release, distribution is unlimited.