Breath of impact: Unveiling the dynamics of exhalation-driven deposition of polydisperse particles in lung across varied physical activities

Mehmood, MF; Munir, A; Farooq, U; Riaz, HH; Zhao, M; Islam, MS

Breath of impact: Unveiling the dynamics of exhalation-driven deposition of polydisperse particles in lung across varied physical activities

Mehmood, MF Munir, A Farooq, U Riaz, HH Zhao, M Islam, MS

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Powder Technology, 2024, 448, pp. 120283
Issue Date:: 2024-12-01

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Field	Value	Language
dc.contributor.author	Mehmood, MF
dc.contributor.author	Munir, A
dc.contributor.author	Farooq, U
dc.contributor.author	Riaz, HH
dc.contributor.author	Zhao, M
dc.contributor.author	Islam, MS
dc.date.accessioned	2025-02-04T22:03:44Z
dc.date.available	2025-02-04T22:03:44Z
dc.date.issued	2024-12-01
dc.identifier.citation	Powder Technology, 2024, 448, pp. 120283
dc.identifier.issn	0032-5910
dc.identifier.issn	1873-328X
dc.identifier.uri	http://hdl.handle.net/10453/184952
dc.description.abstract	Continuous deposition of workplace pollutant particles on lung airways during respiratory actions seriously threatens the lung health of persons performing tasks in polluted environments. This study aims to analyze the exhalation-driven deposition of fine and coarse occupational pollutant particles in polydisperse form. Computer simulations are conducted to study the patterns of deposition of grain dust, coal fly ash, and bituminous coal particles. Key findings include the observation of early emergence of secondary flows in the real model, a notable shift in deposition patterns towards the post-bifurcation zones, and influence of physical activity intensity on particle deposition. Additionally, deposition primarily occurs near cranial ridge during inhalation, while exhalation leads to deposition in pre- and post-bifurcation zones. PM2.5 deposition is minimal and random in idealized model but becomes more significant and consistent in real model. This research underscores the increased risk of lung diseases for workers in polluted environments during vigorous activity.
dc.language	en
dc.publisher	Elsevier
dc.relation.ispartof	Powder Technology
dc.relation.isbasedon	10.1016/j.powtec.2024.120283
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0904 Chemical Engineering, 0913 Mechanical Engineering, 0914 Resources Engineering and Extractive Metallurgy
dc.subject.classification	Chemical Engineering
dc.subject.classification	4004 Chemical engineering
dc.subject.classification	4017 Mechanical engineering
dc.subject.classification	4019 Resources engineering and extractive metallurgy
dc.title	Breath of impact: Unveiling the dynamics of exhalation-driven deposition of polydisperse particles in lung across varied physical activities
dc.type	Journal Article
utslib.citation.volume	448
utslib.for	0904 Chemical Engineering
utslib.for	0913 Mechanical Engineering
utslib.for	0914 Resources Engineering and Extractive Metallurgy
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	open_access	*
dc.rights.license	This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0). To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/
dc.date.updated	2025-02-04T22:03:42Z
pubs.publication-status	Published
pubs.volume	448

Abstract:

Continuous deposition of workplace pollutant particles on lung airways during respiratory actions seriously threatens the lung health of persons performing tasks in polluted environments. This study aims to analyze the exhalation-driven deposition of fine and coarse occupational pollutant particles in polydisperse form. Computer simulations are conducted to study the patterns of deposition of grain dust, coal fly ash, and bituminous coal particles. Key findings include the observation of early emergence of secondary flows in the real model, a notable shift in deposition patterns towards the post-bifurcation zones, and influence of physical activity intensity on particle deposition. Additionally, deposition primarily occurs near cranial ridge during inhalation, while exhalation leads to deposition in pre- and post-bifurcation zones. PM2.5 deposition is minimal and random in idealized model but becomes more significant and consistent in real model. This research underscores the increased risk of lung diseases for workers in polluted environments during vigorous activity.

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http://hdl.handle.net/10453/184952