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Numerical investigation of gaseous pollutant cross-transmission for single-sided natural ventilation driven by buoyancy and wind
Single-sided natural ventilation was numerically investigated to determine the impact of buoyancy and wind on the cross-transmission of pollution by considering six window types commonly found in multistory buildings. The goal of this study was to predict the gaseous pollutant transmission using com...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier Ltd.
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7116971/ https://www.ncbi.nlm.nih.gov/pubmed/32287994 http://dx.doi.org/10.1016/j.buildenv.2020.106705 |
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author | Wang, Jihong Huo, Qiannan Zhang, Tengfei Wang, Shugang Battaglia, Francine |
author_facet | Wang, Jihong Huo, Qiannan Zhang, Tengfei Wang, Shugang Battaglia, Francine |
author_sort | Wang, Jihong |
collection | PubMed |
description | Single-sided natural ventilation was numerically investigated to determine the impact of buoyancy and wind on the cross-transmission of pollution by considering six window types commonly found in multistory buildings. The goal of this study was to predict the gaseous pollutant transmission using computational fluid dynamics based on the Reynolds-averaged Navier-Stokes equations and baseline k-ω turbulence equations. The results indicated that ventilation rates generally increased with increasing wind speeds if the effects of buoyancy and wind were not suppressed; however, the re-entry ratio representing the proportion of expelled air re-entering other floors and the corresponding risk of infection decreased. If the source of the virus was on a central floor, the risk of infection was the highest on the floors closest to the source. Different window types were also considered for determining their effectiveness in controlling cross-transmission and infection risk, depending on the source location and driving force (e.g., buoyancy and wind). |
format | Online Article Text |
id | pubmed-7116971 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Elsevier Ltd. |
record_format | MEDLINE/PubMed |
spelling | pubmed-71169712020-04-02 Numerical investigation of gaseous pollutant cross-transmission for single-sided natural ventilation driven by buoyancy and wind Wang, Jihong Huo, Qiannan Zhang, Tengfei Wang, Shugang Battaglia, Francine Build Environ Article Single-sided natural ventilation was numerically investigated to determine the impact of buoyancy and wind on the cross-transmission of pollution by considering six window types commonly found in multistory buildings. The goal of this study was to predict the gaseous pollutant transmission using computational fluid dynamics based on the Reynolds-averaged Navier-Stokes equations and baseline k-ω turbulence equations. The results indicated that ventilation rates generally increased with increasing wind speeds if the effects of buoyancy and wind were not suppressed; however, the re-entry ratio representing the proportion of expelled air re-entering other floors and the corresponding risk of infection decreased. If the source of the virus was on a central floor, the risk of infection was the highest on the floors closest to the source. Different window types were also considered for determining their effectiveness in controlling cross-transmission and infection risk, depending on the source location and driving force (e.g., buoyancy and wind). Elsevier Ltd. 2020-04 2020-01-31 /pmc/articles/PMC7116971/ /pubmed/32287994 http://dx.doi.org/10.1016/j.buildenv.2020.106705 Text en © 2020 Elsevier Ltd. All rights reserved. Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active. |
spellingShingle | Article Wang, Jihong Huo, Qiannan Zhang, Tengfei Wang, Shugang Battaglia, Francine Numerical investigation of gaseous pollutant cross-transmission for single-sided natural ventilation driven by buoyancy and wind |
title | Numerical investigation of gaseous pollutant cross-transmission for single-sided natural ventilation driven by buoyancy and wind |
title_full | Numerical investigation of gaseous pollutant cross-transmission for single-sided natural ventilation driven by buoyancy and wind |
title_fullStr | Numerical investigation of gaseous pollutant cross-transmission for single-sided natural ventilation driven by buoyancy and wind |
title_full_unstemmed | Numerical investigation of gaseous pollutant cross-transmission for single-sided natural ventilation driven by buoyancy and wind |
title_short | Numerical investigation of gaseous pollutant cross-transmission for single-sided natural ventilation driven by buoyancy and wind |
title_sort | numerical investigation of gaseous pollutant cross-transmission for single-sided natural ventilation driven by buoyancy and wind |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7116971/ https://www.ncbi.nlm.nih.gov/pubmed/32287994 http://dx.doi.org/10.1016/j.buildenv.2020.106705 |
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