Geo-environmental parametric 3D models of SARS-CoV-2 virus circulation in hospital ventilation systems

Carla Gabriela Carlot Zorzi, Alcindo Neckel, Laércio Stolfo Maculan, Grace Tibério Cardoso, Leila Dal Moro, Alexandre Almeida Del Savio, Marcos Oliveira, Eliane Thaines Bodah, Brian William Bodah

Producción científica: Contribución a una revistaArtículo (Contribución a Revista)revisión exhaustiva

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The novel coronavirus, SARS-CoV-2, has the potential to cause natural ventilation systems in hospital environments to be rendered inadequate, not only for workers but also for people who transit through these environments even for a limited duration. Studies in of the fields of geosciences and engineering, when combined with appropriate technologies, allow for the possibility of reducing the impacts of the SARS-CoV-2 virus in the environment, including those of hospitals which are critical centers for healthcare. In this work, we build parametric 3D models to assess the possible circulation of the SARS-CoV-2 virus in the natural ventilation system of a hospital built to care infected patients during the COVID-19 pandemic. Building Information Modeling (BIM) was performed, generating 3D models of hospital environments utilizing Revit software for Autodesk CFD 2021. The evaluation considered dimensional analyses of 0°, 45°, 90° and 180°. The analysis of natural ventilation patterns on both internal and external surfaces and the distribution of windows in relation to the displacement dynamics of the SARS-CoV-2 virus through the air were considered. The results showed that in the external area of the hospital, the wind speed reached velocities up to 2.1 m/s when entering the building through open windows. In contact with the furniture, this value decreased to 0.78 m/s. In some internal isolation wards that house patients with COVID-19, areas that should be equipped with negative room pressure, air velocity was null. Our study provides insights into the possibility of SARS-CoV-2 contamination in internal hospital environments as well as external areas surrounding hospitals, both of which encounter high pedestrian traffic in cities worldwide.

Idioma originalInglés
Número de artículo101279
PublicaciónGeoscience Frontiers
EstadoPublicada - 1 ago. 2021


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