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Direct Numerical Simulation of a cough-induced aerosol-laden turbulent jet interacting with a large-scale circulation

Batmaz, Ege and Schmeling, Daniel and Wagner, Claus (2023) Direct Numerical Simulation of a cough-induced aerosol-laden turbulent jet interacting with a large-scale circulation. In: 10th International Symposium on Turbulence, Heat and Mass Transfer 2023, pp. 1-12. Begell House Publishers. 10th International Symposium on Turbulence, Heat and Mass Transfer 2023, 2023-09-11 - 2023-09-15, Rome, Italy. doi: 10.1615/ICHMT.THMT-23.450. ISBN 978-1-56700-534-9. ISSN 2377-4169.

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Official URL: https://www.dl.begellhouse.com/references/1bb331655c289a0a,1dc0ce6e1bb42d0b,6e975d702383e565.html

Abstract

The dispersion of cough-induced particle clouds under the influence of a large-scale circulation (LSC) is studied using direct numerical simulations (DNS). Extending previous research on droplet dispersion in unventilated environments, this study focuses on aerosols within a turbulent cough-generated jet, analyzing their interaction with the LSC and comparing trajectories. The cough-generated jet progresses through critical stages, including the jet and puff phases, which are studied over an extended period of time. It is found that the presence of a LSC increases the maximum horizontal advancement of the particle cloud during the puff phase and alters its shape. Particles larger than 60 µm settle due to gravitational forces, while particles smaller than 60 µm are categorized by size for further analysis using centroid and dynamic time warping (DTW) methods in the horizontal direction. The comparison demonstrates that DTW effectively captures the more complex and dynamic nature of respiratory particle dispersion.

Item URL in elib:https://elib.dlr.de/197757/
Document Type:Conference or Workshop Item (Poster)
Additional Information:ISBN: 978-1-56700-534-9 ISBN Online: 978-1-56700-535-6 ISSN: 2377-4169 ISSN Online: 2377-2816
Title:Direct Numerical Simulation of a cough-induced aerosol-laden turbulent jet interacting with a large-scale circulation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Batmaz, EgeUNSPECIFIEDhttps://orcid.org/0000-0002-9803-0595UNSPECIFIED
Schmeling, DanielUNSPECIFIEDhttps://orcid.org/0000-0003-2712-9974UNSPECIFIED
Wagner, ClausUNSPECIFIEDhttps://orcid.org/0000-0003-2273-0568UNSPECIFIED
Date:2023
Journal or Publication Title:10th International Symposium on Turbulence, Heat and Mass Transfer 2023
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI:10.1615/ICHMT.THMT-23.450
Page Range:pp. 1-12
Publisher:Begell House Publishers
Series Name:ICHMT Digital Library
ISSN:2377-4169
ISBN:978-1-56700-534-9
Status:Published
Keywords:DNS, Large-Scale Circulation, Dynamic Time Warping
Event Title:10th International Symposium on Turbulence, Heat and Mass Transfer 2023
Event Location:Rome, Italy
Event Type:international Conference
Event Start Date:11 September 2023
Event End Date:15 September 2023
Organizer:International Centre for Heat and Mass Transfer; Sapienza Università di Roma; Technische Universiteit Delft; Osaka Metropolitan University
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:other
DLR - Research area:Transport
DLR - Program:V - no assignment
DLR - Research theme (Project):V - no assignment
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Ground Vehicles
Deposited By: Batmaz, Ege
Deposited On:08 Dec 2023 10:14
Last Modified:24 Apr 2024 20:58

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