A model for indoor motion dynamics of SARS-CoV-2 as a function of respiratory droplet size and evaporation.

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Tytuł:: A model for indoor motion dynamics of SARS-CoV-2 as a function of respiratory droplet size and evaporation.
Autorzy:: Aydin M; Department of Soil Science, Mustafa Kemal University, Antakya, Hatay, Turkey. .
Savas SA; Department of Plastic and Reconstructive Surgery, Faculty of Medicine, Alanya Alaaddin Keykubat University, Alanya, Antalya, Turkey.
Evrendilek F; Department of Environmental Engineering, Bolu Abant Izzet Baysal University, Bolu, Turkey.
Aydin IE; Department of Emergency Medicine, Faculty of Medicine, Ordu University, Ordu, Turkey.
Evrendilek DE; Department of Computing Science, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada.
Źródło:: Environmental monitoring and assessment [Environ Monit Assess] 2021 Sep 05; Vol. 193 (10), pp. 626. Date of Electronic Publication: 2021 Sep 05.
Typ publikacji:: Journal Article
Język:: English
Imprint Name(s):: Publication: 1998- : Dordrecht : Springer
Original Publication: Dordrecht, Holland ; Boston : D. Reidel Pub. Co., c1981-
MeSH Terms:: Aerosols*
Air Microbiology*
Environmental Monitoring*
SARS-CoV-2*/isolation & purification
Humans
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Risk Manag Healthc Policy. 2021 Feb 25;14:815-825. (PMID: 33658877)
Phys Rev Lett. 2021 Jan 22;126(3):034502. (PMID: 33543958)
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Phys Fluids (1994). 2020 Sep 1;32(9):097102. (PMID: 32982136)
Contributed Indexing:: Keywords: COVID-19; Droplet evaporation; Newton’s and Stokes’ laws; Respiratory droplet size; SARS-CoV-2 contamination risks
Substance Nomenclature:: 0 (Aerosols)
Entry Date(s):: Date Created: 20210905 Date Completed: 20210907 Latest Revision: 20220531
Update Code:: 20240105
PubMed Central ID:: PMC8418688
DOI:: 10.1007/s10661-021-09382-7
PMID:: 34482422
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A simplified model has been devised to estimate the falling dynamics of severe acute respiratory syndrome corona-virus 2 (SARS-CoV-2)-laden droplets in an indoor environment. Our estimations were compared to existing literature data. The spread of SARS-CoV-2 is closely coupled to its falling dynamics as a function of respiratory droplet diameter (1 to 2000 μm) of an infected person and droplet evaporation. The falling time of SARS-CoV-2 with a respiratory droplet diameter of about 300 μm from a height of 1.7 m remained almost the same among the Newtonian lift equation, Stokes's law, and our simplified model derived from them so as to account for its evaporation. The evaporative demand peaked at midday which was ten times that at midnight. The evaporating droplets [Formula: see text] 6 μm lost their water content rapidly, making their lifetimes in the air shorter than their falling times. The droplets [Formula: see text] 6 μm were able to evaporate completely and remained in the air for about 5 min as droplet nuclei with SARS-CoV-2.
(© 2021. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)

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