Three dimensional analysis of the exhalation flow in the proximity of the mouth

The human exhalation flow is characterized in this work from the three-dimensional velocimetry results obtained by using the stereo particle image velocimetry (SPIV) measurement technique on the flow emitted from a realistic airway model. For this purpose, the transient exhalation flow through the m...

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Autores: Berlanga Cañete, Félix Antonio, Gómez del Pino, Pablo Joaquín, Esteban Paz, Adolfo, Liu, L., Nielsen, P.V.
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universidad Nacional de Educación a Distancia
Repositorio:e-spacio. Repositorio Institucional de la UNED
Idioma:español
OAI Identifier:oai:e-spacio.uned.es:20.500.14468/24704
Acceso en línea:https://hdl.handle.net/20.500.14468/24704
Access Level:acceso abierto
Palabra clave:33 Ciencias Tecnológicas::3313 Tecnología e ingeniería mecánicas
cross infection risk
turbulent jet
exhalation flows
realistic model
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spelling Three dimensional analysis of the exhalation flow in the proximity of the mouthBerlanga Cañete, Félix AntonioGómez del Pino, Pablo JoaquínEsteban Paz, AdolfoLiu, L.Nielsen, P.V.33 Ciencias Tecnológicas::3313 Tecnología e ingeniería mecánicascross infection riskturbulent jetexhalation flowsrealistic modelThe human exhalation flow is characterized in this work from the three-dimensional velocimetry results obtained by using the stereo particle image velocimetry (SPIV) measurement technique on the flow emitted from a realistic airway model. For this purpose, the transient exhalation flow through the mouth of a person performing two different breaths corresponding to two metabolic rates, standing relaxed (SR) and walking active (WA), is emulated and studied. To reproduce the flow realistically, a detailed three-dimensional model obtained from computed tomography measurements on real subjects is used. To cope with the variability of the experimental data, a subsequent analysis of the results is performed using the TR-PIV (time resolved particle image velocimetry) technique. Exhalation produces a transient jet that becomes a puff when flow emission ends. Three-dimensional vector fields of the jet velocity are obtained in five equally spaced transverse planes up to a distance of Image 1 from the mouth at equally spaced time instants Image 2 which will be referred to as phases (φ), from the beginning to the end of exhalation. The time evolution during exhalation of the jet area of influence, the velocity field and the jet air entrainment have been characterized for each of the jet cross sections. The importance of the use of realistic airway models for the study of this type of flow and the influence of the metabolic rate on its development are also analyzed. The results obtained contribute to the characterization of the human exhalation as a pathway of the transmission of pathogens such as SARS-CoV-2 virus.Elseviere-Spacio UNED20242024-12-0420242024-02-2920242024-02-29journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14468/24704reponame:e-spacio. Repositorio Institucional de la UNEDinstname:Universidad Nacional de Educación a DistanciaEspañolspaopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.esoai:e-spacio.uned.es:20.500.14468/247042026-06-06T12:38:31Z
dc.title.none.fl_str_mv Three dimensional analysis of the exhalation flow in the proximity of the mouth
title Three dimensional analysis of the exhalation flow in the proximity of the mouth
spellingShingle Three dimensional analysis of the exhalation flow in the proximity of the mouth
Berlanga Cañete, Félix Antonio
33 Ciencias Tecnológicas::3313 Tecnología e ingeniería mecánicas
cross infection risk
turbulent jet
exhalation flows
realistic model
title_short Three dimensional analysis of the exhalation flow in the proximity of the mouth
title_full Three dimensional analysis of the exhalation flow in the proximity of the mouth
title_fullStr Three dimensional analysis of the exhalation flow in the proximity of the mouth
title_full_unstemmed Three dimensional analysis of the exhalation flow in the proximity of the mouth
title_sort Three dimensional analysis of the exhalation flow in the proximity of the mouth
dc.creator.none.fl_str_mv Berlanga Cañete, Félix Antonio
Gómez del Pino, Pablo Joaquín
Esteban Paz, Adolfo
Liu, L.
Nielsen, P.V.
author Berlanga Cañete, Félix Antonio
author_facet Berlanga Cañete, Félix Antonio
Gómez del Pino, Pablo Joaquín
Esteban Paz, Adolfo
Liu, L.
Nielsen, P.V.
author_role author
author2 Gómez del Pino, Pablo Joaquín
Esteban Paz, Adolfo
Liu, L.
Nielsen, P.V.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv e-Spacio UNED
dc.subject.none.fl_str_mv 33 Ciencias Tecnológicas::3313 Tecnología e ingeniería mecánicas
cross infection risk
turbulent jet
exhalation flows
realistic model
topic 33 Ciencias Tecnológicas::3313 Tecnología e ingeniería mecánicas
cross infection risk
turbulent jet
exhalation flows
realistic model
description The human exhalation flow is characterized in this work from the three-dimensional velocimetry results obtained by using the stereo particle image velocimetry (SPIV) measurement technique on the flow emitted from a realistic airway model. For this purpose, the transient exhalation flow through the mouth of a person performing two different breaths corresponding to two metabolic rates, standing relaxed (SR) and walking active (WA), is emulated and studied. To reproduce the flow realistically, a detailed three-dimensional model obtained from computed tomography measurements on real subjects is used. To cope with the variability of the experimental data, a subsequent analysis of the results is performed using the TR-PIV (time resolved particle image velocimetry) technique. Exhalation produces a transient jet that becomes a puff when flow emission ends. Three-dimensional vector fields of the jet velocity are obtained in five equally spaced transverse planes up to a distance of Image 1 from the mouth at equally spaced time instants Image 2 which will be referred to as phases (φ), from the beginning to the end of exhalation. The time evolution during exhalation of the jet area of influence, the velocity field and the jet air entrainment have been characterized for each of the jet cross sections. The importance of the use of realistic airway models for the study of this type of flow and the influence of the metabolic rate on its development are also analyzed. The results obtained contribute to the characterization of the human exhalation as a pathway of the transmission of pathogens such as SARS-CoV-2 virus.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-12-04
2024
2024-02-29
2024
2024-02-29
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14468/24704
url https://hdl.handle.net/20.500.14468/24704
dc.language.none.fl_str_mv Español
spa
language_invalid_str_mv Español
language spa
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
http://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:e-spacio. Repositorio Institucional de la UNED
instname:Universidad Nacional de Educación a Distancia
instname_str Universidad Nacional de Educación a Distancia
reponame_str e-spacio. Repositorio Institucional de la UNED
collection e-spacio. Repositorio Institucional de la UNED
repository.name.fl_str_mv
repository.mail.fl_str_mv
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