The Role of Airflow in Airborne Transmission of COVID 19
DOI:
https://doi.org/10.13133/2532-5876/17224Abstract
The spreading of virus via air pathway has been investigated with simple examples using the Navier–Stokes equations and their application with uncompressible flow and in presence of convection due to heat transfer. Given the results, we argue that the minimum spacing for safety between persons depends on the ratio between the height and length of an artifact, here shown as a cavity box. We found that the best spacing among people is obtained when the ratio is 1:5. This means that the safety consists in staying as far away as possible or using mask properly. In case of confluence between street and square, the Navier–Stokes equations exhibit turbulence at the edges of the system.
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