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Numerical Simulation of the Aerosol Formation and Spreading in an Air-Conditioned Train Compartment

Konstantinov, Mikhail and Schmeling, Daniel and Wagner, Claus (2023) Numerical Simulation of the Aerosol Formation and Spreading in an Air-Conditioned Train Compartment. Journal of Aerosol Science, 170 (106139), pp. 1-19. Elsevier. doi: 10.1016/j.jaerosci.2023.106139. ISSN 0021-8502.

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Official URL: https://doi.org/10.1016/j.jaerosci.2023.106139


Results of simulations of the unsteady aerosol formation and spreading in a train compartment under ventilation conditions obtained using Computational Fluid Dynamics (CFD) are presented. The latter includes various models to simulate unsteady flows including the transient two-phase atomization process and thermal convection. The aerosol distributions in a ventilated train compartment are discussed analysing the predicted dispersion of the droplets exhaled by the following respiratory events: a double cough, 10 s of speaking or continuous breathing of a passenger wearing a or no mask. The results show that the aerosol particles propagate two times deeper in the compartment for the coughing event than for speaking, 2.5 times deeper than for free breathing and 17 times deeper than for breathing with a mask. Further, it is shown that 2 min after the end of the coughing event, only about 6% of active aerosol particles remain in the compartment.

Item URL in elib:https://elib.dlr.de/144337/
Document Type:Article
Title:Numerical Simulation of the Aerosol Formation and Spreading in an Air-Conditioned Train Compartment
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schmeling, DanielUNSPECIFIEDhttps://orcid.org/0000-0003-2712-9974UNSPECIFIED
Wagner, ClausUNSPECIFIEDhttps://orcid.org/0000-0003-2273-0568UNSPECIFIED
Date:19 January 2023
Journal or Publication Title:Journal of Aerosol Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1-19
EditorsEmailEditor's ORCID iDORCID Put Code
Keywords:Aerosol dispersion, train compartment air flow, computational fluid dynamics (CFD), Lagrangian Multiphase Model
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Rail Transport
DLR - Research area:Transport
DLR - Program:V SC Schienenverkehr
DLR - Research theme (Project):V - RoSto - Rolling Stock, V - NGT BIT (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Ground Vehicles
Deposited By: Schmeling, Dr Daniel
Deposited On:24 Mar 2023 10:32
Last Modified:24 Mar 2023 10:32

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