Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics Study
- Autores
- Ramajo, Damian Enrique; Corzo, Santiago Francisco
- Año de publicación
- 2022
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The Heat, Ventilation, Air Conditioning (HVAC) systems in urban buses promote high particle motion. In this paper the effect of centralized roof-top HVAC on virus transmission by droplets caused by sneezing and coughing was studied with the Lagrangian approach while the transmission through aerosols caused by breathing and talking was modeled with the Eulerian tracer method. It was found that the large droplets (> 200 µm) can travel more than 3 m without being affected by the airflow. On the other hand, the small droplets (< 5 µm) are easily dragged, dispersed, and also captured by the HVAC. On the other hand, aerosols are quickly spread by the HVAC. It was found that the centralized roof-top HVAC reduces the concentration in the central zone, but it is ineffective to renew the air in the front and rear sides. The Wells-Riley risk model showed that the average risk across the whole bus can be reduced to a half and a quarter by renewing the air of the cabin 10 times per hour.
Fil: Ramajo, Damian Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Corzo, Santiago Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina - Materia
-
CFD
DROPLETS
LAGRANGIAN AND EULERIAN SIMULATION
URBAN BUS
VIRUS TRANSMISSION - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/204576
Ver los metadatos del registro completo
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Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics StudyRamajo, Damian EnriqueCorzo, Santiago FranciscoCFDDROPLETSLAGRANGIAN AND EULERIAN SIMULATIONURBAN BUSVIRUS TRANSMISSIONhttps://purl.org/becyt/ford/2.3https://purl.org/becyt/ford/2The Heat, Ventilation, Air Conditioning (HVAC) systems in urban buses promote high particle motion. In this paper the effect of centralized roof-top HVAC on virus transmission by droplets caused by sneezing and coughing was studied with the Lagrangian approach while the transmission through aerosols caused by breathing and talking was modeled with the Eulerian tracer method. It was found that the large droplets (> 200 µm) can travel more than 3 m without being affected by the airflow. On the other hand, the small droplets (< 5 µm) are easily dragged, dispersed, and also captured by the HVAC. On the other hand, aerosols are quickly spread by the HVAC. It was found that the centralized roof-top HVAC reduces the concentration in the central zone, but it is ineffective to renew the air in the front and rear sides. The Wells-Riley risk model showed that the average risk across the whole bus can be reduced to a half and a quarter by renewing the air of the cabin 10 times per hour.Fil: Ramajo, Damian Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; ArgentinaFil: Corzo, Santiago Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; ArgentinaTaiwan Association for Aerosol Research-Taar2022-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/204576Ramajo, Damian Enrique; Corzo, Santiago Francisco; Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics Study; Taiwan Association for Aerosol Research-Taar; Aerosol And Air Quality Research; 22; 8; 8-2022; 1-201680-8584CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://aaqr.org/articles/aaqr-21-11-covid2-0334info:eu-repo/semantics/altIdentifier/doi/10.4209/aaqr.210334info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:38:55Zoai:ri.conicet.gov.ar:11336/204576instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:38:55.593CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics Study |
title |
Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics Study |
spellingShingle |
Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics Study Ramajo, Damian Enrique CFD DROPLETS LAGRANGIAN AND EULERIAN SIMULATION URBAN BUS VIRUS TRANSMISSION |
title_short |
Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics Study |
title_full |
Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics Study |
title_fullStr |
Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics Study |
title_full_unstemmed |
Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics Study |
title_sort |
Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics Study |
dc.creator.none.fl_str_mv |
Ramajo, Damian Enrique Corzo, Santiago Francisco |
author |
Ramajo, Damian Enrique |
author_facet |
Ramajo, Damian Enrique Corzo, Santiago Francisco |
author_role |
author |
author2 |
Corzo, Santiago Francisco |
author2_role |
author |
dc.subject.none.fl_str_mv |
CFD DROPLETS LAGRANGIAN AND EULERIAN SIMULATION URBAN BUS VIRUS TRANSMISSION |
topic |
CFD DROPLETS LAGRANGIAN AND EULERIAN SIMULATION URBAN BUS VIRUS TRANSMISSION |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.3 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
The Heat, Ventilation, Air Conditioning (HVAC) systems in urban buses promote high particle motion. In this paper the effect of centralized roof-top HVAC on virus transmission by droplets caused by sneezing and coughing was studied with the Lagrangian approach while the transmission through aerosols caused by breathing and talking was modeled with the Eulerian tracer method. It was found that the large droplets (> 200 µm) can travel more than 3 m without being affected by the airflow. On the other hand, the small droplets (< 5 µm) are easily dragged, dispersed, and also captured by the HVAC. On the other hand, aerosols are quickly spread by the HVAC. It was found that the centralized roof-top HVAC reduces the concentration in the central zone, but it is ineffective to renew the air in the front and rear sides. The Wells-Riley risk model showed that the average risk across the whole bus can be reduced to a half and a quarter by renewing the air of the cabin 10 times per hour. Fil: Ramajo, Damian Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina Fil: Corzo, Santiago Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina |
description |
The Heat, Ventilation, Air Conditioning (HVAC) systems in urban buses promote high particle motion. In this paper the effect of centralized roof-top HVAC on virus transmission by droplets caused by sneezing and coughing was studied with the Lagrangian approach while the transmission through aerosols caused by breathing and talking was modeled with the Eulerian tracer method. It was found that the large droplets (> 200 µm) can travel more than 3 m without being affected by the airflow. On the other hand, the small droplets (< 5 µm) are easily dragged, dispersed, and also captured by the HVAC. On the other hand, aerosols are quickly spread by the HVAC. It was found that the centralized roof-top HVAC reduces the concentration in the central zone, but it is ineffective to renew the air in the front and rear sides. The Wells-Riley risk model showed that the average risk across the whole bus can be reduced to a half and a quarter by renewing the air of the cabin 10 times per hour. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-08 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/204576 Ramajo, Damian Enrique; Corzo, Santiago Francisco; Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics Study; Taiwan Association for Aerosol Research-Taar; Aerosol And Air Quality Research; 22; 8; 8-2022; 1-20 1680-8584 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/204576 |
identifier_str_mv |
Ramajo, Damian Enrique; Corzo, Santiago Francisco; Airborne Transmission Risk in Urban Buses: A Computational Fluid Dynamics Study; Taiwan Association for Aerosol Research-Taar; Aerosol And Air Quality Research; 22; 8; 8-2022; 1-20 1680-8584 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://aaqr.org/articles/aaqr-21-11-covid2-0334 info:eu-repo/semantics/altIdentifier/doi/10.4209/aaqr.210334 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Taiwan Association for Aerosol Research-Taar |
publisher.none.fl_str_mv |
Taiwan Association for Aerosol Research-Taar |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
_version_ |
1844614413270646784 |
score |
13.070432 |