LARGE EDDY SIMULATION FOR THE PREDICTION OF HUMAN COUGHING

[EN] The health awareness that has arisen from the COVID pandemic has been translated into interest in studying the contagion methods of airborne viruses. The cough mechanism is one cause of virion spread. To analyze this phenomenon, computational fluid dynamics (CFD) simulations of the human cough...

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Detalhes bibliográficos
Autores: Payri, Raul|||0000-0001-7428-5510, Marti-Aldaravi, Pedro|||0000-0003-4650-4004, Quintero-Igeño, Pedro-Manuel|||0000-0003-4373-2079, Marco-Gimeno, Javier|||0000-0002-4815-3714
Tipo de documento: artigo
Data de publicação:2021
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositório:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglês
OAI Identifier:oai:riunet.upv.es:10251/183127
Acesso em linha:https://riunet.upv.es/handle/10251/183127
Access Level:Acceso aberto
Palavra-chave:COVID-19
Cough
Droplets
CFD
PDF
Trajectories
Aerosols
INGENIERIA AEROESPACIAL
MAQUINAS Y MOTORES TERMICOS
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spelling LARGE EDDY SIMULATION FOR THE PREDICTION OF HUMAN COUGHINGPayri, Raul|||0000-0001-7428-5510Marti-Aldaravi, Pedro|||0000-0003-4650-4004Quintero-Igeño, Pedro-Manuel|||0000-0003-4373-2079Marco-Gimeno, Javier|||0000-0002-4815-3714COVID-19CoughDropletsCFDPDFTrajectoriesAerosolsINGENIERIA AEROESPACIALMAQUINAS Y MOTORES TERMICOS[EN] The health awareness that has arisen from the COVID pandemic has been translated into interest in studying the contagion methods of airborne viruses. The cough mechanism is one cause of virion spread. To analyze this phenomenon, computational fluid dynamics (CFD) simulations of the human cough have been set up in closed room conditions. Fundamental droplet, air, and thermodynamic conditions for the problem have been extracted from the literature and applied to the simulations performed. Three typologies of cough have been computed corresponding to the maximum, minimum, and mean peak cough velocities of the human being, and their corresponding injection profiles. Coughs were simulated in transient conditions and the droplets were tracked following an Eulerian-Lagrangian approach and large eddy simulation (LES) formulation for the turbulence phenomenon. Results revealed droplet travel distances of almost 2 m for the strongest cough case. Also, the presence of droplets smaller than 5 ¿m of diameter, the main virus spreader, was considerably larger than particles of bigger size. Additionally, most of the droplets evaporate or fall to the ground within 2 s after their injection. The remaining ones that stayed above the waistline or remained suspended in the air followed trajectories coming from buoyancy effects rather than being driven by the initial velocity profile. Moreover, it was found how almost the totality of the droplets expelled followed a trajectory towards the floor. Droplets that did not evaporate during the fluid injection became airborne for at least 5 seconds after the coughingThe equipment and resources used in this work have been partially supported by "Conselleria d'Educacio, Investigacio, Cultura y Esport" of Generalitat Valenciana in the framework of the "Ajudes per a grups d'investigacioconsolidables" program (Project Reference AICO/2020/208) . Additionally, the Ph.D. student Javier Marco-Gimeno has been funded by a grant from the Gov-ernment of Generalitat Valenciana with reference ACIF/2020/259 and financial support from The European Union.Begell House Inc.Departamento de Máquinas y Motores TérmicosEscuela Técnica Superior de Ingeniería Aeroespacial y Diseño IndustrialInstituto Universitario de Investigación CMT - Clean Mobility & ThermofluidsEscuela Técnica Superior de Ingeniería IndustrialEuropean CommissionGeneralitat ValencianaRepositorio Institucional de la Universitat Politècnica de València Riunet20212021-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/183127reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengGeneralitat Valenciana https://doi.org/10.13039/501100003359 ACIF%2F2020%2F259 AYUDA PREDOCTORAL GVA-MARCO GIMENO. PROYECTO: ESTUDIO COMPUTACIONAL DE LA FORMACION Y EL DESARROLLO DE CHORROS LIQUIDOS EN CONDICIONES DE BAJA PRESIONGeneralitat Valenciana https://doi.org/10.13039/501100003359 AICO%2F2020%2F208 NUEVOS CONCEPTOS EN INYECCIÓN DE GASOLINA (NCIG)open accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1831272026-06-13T07:49:27Z
dc.title.none.fl_str_mv LARGE EDDY SIMULATION FOR THE PREDICTION OF HUMAN COUGHING
title LARGE EDDY SIMULATION FOR THE PREDICTION OF HUMAN COUGHING
spellingShingle LARGE EDDY SIMULATION FOR THE PREDICTION OF HUMAN COUGHING
Payri, Raul|||0000-0001-7428-5510
COVID-19
Cough
Droplets
CFD
PDF
Trajectories
Aerosols
INGENIERIA AEROESPACIAL
MAQUINAS Y MOTORES TERMICOS
title_short LARGE EDDY SIMULATION FOR THE PREDICTION OF HUMAN COUGHING
title_full LARGE EDDY SIMULATION FOR THE PREDICTION OF HUMAN COUGHING
title_fullStr LARGE EDDY SIMULATION FOR THE PREDICTION OF HUMAN COUGHING
title_full_unstemmed LARGE EDDY SIMULATION FOR THE PREDICTION OF HUMAN COUGHING
title_sort LARGE EDDY SIMULATION FOR THE PREDICTION OF HUMAN COUGHING
dc.creator.none.fl_str_mv Payri, Raul|||0000-0001-7428-5510
Marti-Aldaravi, Pedro|||0000-0003-4650-4004
Quintero-Igeño, Pedro-Manuel|||0000-0003-4373-2079
Marco-Gimeno, Javier|||0000-0002-4815-3714
author Payri, Raul|||0000-0001-7428-5510
author_facet Payri, Raul|||0000-0001-7428-5510
Marti-Aldaravi, Pedro|||0000-0003-4650-4004
Quintero-Igeño, Pedro-Manuel|||0000-0003-4373-2079
Marco-Gimeno, Javier|||0000-0002-4815-3714
author_role author
author2 Marti-Aldaravi, Pedro|||0000-0003-4650-4004
Quintero-Igeño, Pedro-Manuel|||0000-0003-4373-2079
Marco-Gimeno, Javier|||0000-0002-4815-3714
author2_role author
author
author
dc.contributor.none.fl_str_mv Departamento de Máquinas y Motores Térmicos
Escuela Técnica Superior de Ingeniería Aeroespacial y Diseño Industrial
Instituto Universitario de Investigación CMT - Clean Mobility & Thermofluids
Escuela Técnica Superior de Ingeniería Industrial
European Commission
Generalitat Valenciana
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv COVID-19
Cough
Droplets
CFD
PDF
Trajectories
Aerosols
INGENIERIA AEROESPACIAL
MAQUINAS Y MOTORES TERMICOS
topic COVID-19
Cough
Droplets
CFD
PDF
Trajectories
Aerosols
INGENIERIA AEROESPACIAL
MAQUINAS Y MOTORES TERMICOS
description [EN] The health awareness that has arisen from the COVID pandemic has been translated into interest in studying the contagion methods of airborne viruses. The cough mechanism is one cause of virion spread. To analyze this phenomenon, computational fluid dynamics (CFD) simulations of the human cough have been set up in closed room conditions. Fundamental droplet, air, and thermodynamic conditions for the problem have been extracted from the literature and applied to the simulations performed. Three typologies of cough have been computed corresponding to the maximum, minimum, and mean peak cough velocities of the human being, and their corresponding injection profiles. Coughs were simulated in transient conditions and the droplets were tracked following an Eulerian-Lagrangian approach and large eddy simulation (LES) formulation for the turbulence phenomenon. Results revealed droplet travel distances of almost 2 m for the strongest cough case. Also, the presence of droplets smaller than 5 ¿m of diameter, the main virus spreader, was considerably larger than particles of bigger size. Additionally, most of the droplets evaporate or fall to the ground within 2 s after their injection. The remaining ones that stayed above the waistline or remained suspended in the air followed trajectories coming from buoyancy effects rather than being driven by the initial velocity profile. Moreover, it was found how almost the totality of the droplets expelled followed a trajectory towards the floor. Droplets that did not evaporate during the fluid injection became airborne for at least 5 seconds after the coughing
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/183127
url https://riunet.upv.es/handle/10251/183127
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Generalitat Valenciana https://doi.org/10.13039/501100003359 ACIF%2F2020%2F259 AYUDA PREDOCTORAL GVA-MARCO GIMENO. PROYECTO: ESTUDIO COMPUTACIONAL DE LA FORMACION Y EL DESARROLLO DE CHORROS LIQUIDOS EN CONDICIONES DE BAJA PRESION
Generalitat Valenciana https://doi.org/10.13039/501100003359 AICO%2F2020%2F208 NUEVOS CONCEPTOS EN INYECCIÓN DE GASOLINA (NCIG)
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Begell House Inc.
publisher.none.fl_str_mv Begell House Inc.
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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