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Hanna S. Transport and dispersion of tracers simulating COVID-19 aerosols in passenger aircraft. Indoor Air. 2021;doi: 10.1111/ina.12974.
Hanna, S. (2021). Transport and dispersion of tracers simulating COVID-19 aerosols in passenger aircraft. Indoor air, . https://doi.org/10.1111/ina.12974
Hanna, Steven. "Transport and dispersion of tracers simulating COVID-19 aerosols in passenger aircraft." Indoor air vol. (2021). doi: https://doi.org/10.1111/ina.12974
Hanna S. Transport and dispersion of tracers simulating COVID-19 aerosols in passenger aircraft. Indoor Air. 2021 Dec 17; doi: 10.1111/ina.12974. Epub 2021 Dec 17. PMID: 34921460.
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Indoor Air. 2021 Dec 17; doi: 10.1111/ina.12974. Epub 2021 Dec 17.

Transport and dispersion of tracers simulating COVID-19 aerosols in passenger aircraft.

Indoor air

Steven Hanna

Affiliations

  1. Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.

PMID: 34921460 DOI: 10.1111/ina.12974

Abstract

Many laboratory experiments and model development activities have been underway to better estimate the risk of a person indoors becoming infected with COVID-19. The current paper focusses on the near-field (distances < about 5 m) transport and dispersion (T&D) of the virons, treating them as inert tracers. The premise is that the T&D process follows widely used basic analytical near-field formulations such as a slab model, a Gaussian plume model, or a diffusivity (K) model. A slab or Gaussian model is more appropriate for cloud sizes less than the distance scale of the turbulence, while a K model is more appropriate for cloud sizes larger than the distance scale. The proposed slab model is evaluated with observations from the TRANSCOM tracer experiment in Boeing 767 and 777 airplanes, which involved multiple release scenarios. Release rates of 1-μm plastic bead inert tracers were constant over 60 s from a mannequin's mouth and samplers were placed at about 40 nearby seat locations. A simple basic science near-field slab model is shown to agree with observations of maximum concentration and dose within a factor of two or three.

© 2021 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

Keywords: COVID-19; TRANSCOM tracer experiment; indoors dispersion model; near-field; pollutant dispersion in aircraft

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