Are runners more prone to become infected with COVID-19? An approach from the raindrop collisional model
It is known that COVID-19 spread mainly from person-to-person through respiratory droplets produced when an infected person coughs or sneezes, and as a result certain ideas about contagious of COVID-19 have been spread. One of them is the widespread belief that close runners, owing to the stronger e...
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/332422 |
| Acceso en línea: | https://hdl.handle.net/2117/332422 https://dx.doi.org/10.1007/s42978-020-00071-4 |
| Access Level: | acceso abierto |
| Palabra clave: | COVID-19 (Disease) Communicable diseases--Transmission Airborne infection COVID-19 contagious Airbone Spread diseases COVID-19 (Malaltia) Malalties transmissibles -- Transmissió Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
| Sumario: | It is known that COVID-19 spread mainly from person-to-person through respiratory droplets produced when an infected person coughs or sneezes, and as a result certain ideas about contagious of COVID-19 have been spread. One of them is the widespread belief that close runners, owing to the stronger exhalation, can be more prone to be infected with COVID-19 because the collision with the suspended respiratory droplets should the runner in front be infected. However, because of the low Stokes number this idea cannot be generalized without carefully thought and in fact can be put into question. Utilizing the raindrop collisional model and with the help of computational fuid dynamics (CFD), it is shown that the probability of collision with respiratory droplets is not always increasing with the approaching velocity of the runner but rather there is a maximum velocity threshold at which the efciency of collision drops |
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