Analysis of airborne sputum droplets flow dynamic behaviors under different ambient conditions and aerosol size effects.
Chemosphere
; 307(Pt 1): 135708, 2022 Nov.
Article
in English
| MEDLINE | ID: covidwho-1936146
ABSTRACT
The coronavirus (COVID-19) is becoming more threatening with the emergence of new mutations. New virus transmission and infection processes remain challenging and re-examinations of proper protection methods are urgently needed. From fluid dynamic viewpoint, the transmission of virus-carrying droplets and aerosols is one key to understanding the virus-transmission mechanisms. This study shows virus transmission by incorporating flow-evaporation model into the Navier-Stokes equation to describe the group of airborne sputum droplets exhaled under Rosin-Rammler distribution. Solid components and humidity field evolution are incorporated in describing droplet and ambient conditions. The numerical model is solved by an inhouse code using advection-diffusion equation for the temperature field and the humidity field, discretized by applying the total-variation diminishing Runge-Kutta method. The results of this study are presented in detail to show the different trends under various ambient conditions and to reveal the major viral-transmission routes as a function of droplet size.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
COVID-19
Type of study:
Experimental Studies
Limits:
Humans
Language:
English
Journal:
Chemosphere
Year:
2022
Document Type:
Article
Affiliation country:
J.chemosphere.2022.135708
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