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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, THMT 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 978-156700534-9. ISSN 2642-5629.
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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/ | ||||||||||||||||
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| 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: |
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| Date: | 2023 | ||||||||||||||||
| Journal or Publication Title: | 10th International Symposium on Turbulence, Heat and Mass Transfer, THMT 2023 | ||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||
| Open Access: | No | ||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||
| In SCOPUS: | Yes | ||||||||||||||||
| 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: | 2642-5629 | ||||||||||||||||
| ISBN: | 978-156700534-9 | ||||||||||||||||
| 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: | 15 Jul 2024 16:21 |
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- Direct Numerical Simulation of a cough-induced aerosol-laden turbulent jet interacting with a large-scale circulation. (deposited 08 Dec 2023 10:14) [Currently Displayed]
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