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Master Thesis

Modélisation de l’impact des stratégies de ventilation et d’aération sur la propagation par voie aérienne du virus SARS-CoV-2 à l’origine du covid

Abstract : Airborne spread of SARS-CoV-2 is now recognized as a mode of transmission of covid disease. In this context, the opening of windows has become a widely disseminated recommendation. This study examines the impact of open windows on ventilation systems and virus transmission. The buildings considered are two residential dwellings with several occupants, including one infected person, in a context of population lockdown. The sensitivity of the results is studied with 6 strategies of windows and doors openings, and with 3 different ventilation systems. The results are analysed in the light of the variations in airflow rates, the relative exposures of the occupants and the risk of infection. They show that some window opening strategies can increase the risk of infection for occupants located in different rooms of the dwelling or even in neighbouring dwellings. Indeed, the distribution of airflows in buildings is complex; influencing airflows by opening a window or sealing a door can modify the flows in the whole building. In the context of a pandemic, it is important to ensure that air flows from the most contaminated areas to the healthiest areas.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-03619363
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Submitted on : Friday, March 25, 2022 - 9:33:42 AM
Last modification on : Wednesday, April 13, 2022 - 3:27:30 AM

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Sabrina Sayah. Modélisation de l’impact des stratégies de ventilation et d’aération sur la propagation par voie aérienne du virus SARS-CoV-2 à l’origine du covid. Sciences de l'ingénieur [physics]. 2021. ⟨dumas-03619363⟩

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