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7 March 2021 Real time large scale air flow and droplet imaging to study effectiveness of personal protection in view of Covid-19 spreading
Rudolf M. Verdaasdonk, Celine van Loon, David Thompson
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Proceedings Volume 11633, Design and Quality for Biomedical Technologies XIV; 1163303 (2021) https://doi.org/10.1117/12.2579327
Event: SPIE BiOS, 2021, Online Only
Abstract
In view of the spreading of the Covid-19 virus, Real-Time Background Oriented Schlieren (RT-BOS) and backlight scatter imaging were used to visualize the air motion and droplets during talking, coughing, sneezing, singing, playing wind instruments. The effectiveness of personal protection like face masks and shields were studied. The distance of air (aerosols) spreading depends on the diameter/shape of the opening and air volume blown out per unit of time. Remarkably, the aerosol and droplet spreading of singing is similar or less than talking and even less for wind instruments. Any mouth mask although leaking air is effective in preventing droplets to spread.
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Rudolf M. Verdaasdonk, Celine van Loon, and David Thompson "Real time large scale air flow and droplet imaging to study effectiveness of personal protection in view of Covid-19 spreading", Proc. SPIE 11633, Design and Quality for Biomedical Technologies XIV, 1163303 (7 March 2021); https://doi.org/10.1117/12.2579327
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KEYWORDS
Real time imaging
Visualization
Aerosols
Motion measurement
Mouth
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