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

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dc.contributor.authorBerlanga Cañete, Félix Antonio
dc.contributor.authorGómez del Pino, Pablo Joaquín
dc.contributor.authorEsteban Paz, Adolfo
dc.contributor.authorLiu, L.
dc.contributor.authorNielsen, P.V.
dc.date.accessioned2024-12-04T18:07:02Z
dc.date.available2024-12-04T18:07:02Z
dc.date.issued2024-02-29
dc.descriptionThe registered version of this article, first published in Heliyon, is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.heliyon.2024.e26283
dc.descriptionLa versión registrada de este artículo, publicado por primera vez en Heliyon, está disponible en línea en el sitio web del editor: Elsevier, https://doi.org/10.1016/j.heliyon.2024.e26283
dc.description.abstractThe 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.en
dc.description.versionversión publicada
dc.identifier.citationBerlanga, F. A., Gomez, P., Esteban, A., Liu, L., & Nielsen, P. V. (2024). Three dimensional analysis of the exhalation flow in the proximity of the mouth. Heliyon, 10(4). https://doi.org/10.1016/j.heliyon.2024.e26283
dc.identifier.doihttps://doi.org/10.1016/j.heliyon.2024.e26283
dc.identifier.issn2405-8440
dc.identifier.urihttps://hdl.handle.net/20.500.14468/24704
dc.journal.issue4
dc.journal.titleHeliyon
dc.journal.volume10
dc.language.isoes
dc.publisherElsevier
dc.relation.centerFacultades y escuelas::E.T.S. de Ingenieros Industriales
dc.relation.departmentMecánica
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject33 Ciencias Tecnológicas::3313 Tecnología e ingeniería mecánicas
dc.subject.keywordscross infection risken
dc.subject.keywordsturbulent jeten
dc.subject.keywordsexhalation flowsen
dc.subject.keywordsrealistic modelen
dc.titleThree dimensional analysis of the exhalation flow in the proximity of the mouthen
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublicationd3d13d8a-e397-42e6-8b75-d90dc1020555
relation.isAuthorOfPublication24d8fea1-d458-4232-930b-452e32bc2626
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relation.isAuthorOfPublication.latestForDiscoveryd3d13d8a-e397-42e6-8b75-d90dc1020555
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