Konstantinov, Mikhail und Schmeling, Daniel und Wagner, Claus (2023) Numerical Simulation of the Aerosol Formation and Spreading in an Air-Conditioned Train Compartment. Journal of Aerosol Science, 170 (106139), Seiten 1-19. Elsevier. doi: 10.1016/j.jaerosci.2023.106139. ISSN 0021-8502.
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Offizielle URL: https://doi.org/10.1016/j.jaerosci.2023.106139
Kurzfassung
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.
elib-URL des Eintrags: | https://elib.dlr.de/144337/ | ||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||
Titel: | Numerical Simulation of the Aerosol Formation and Spreading in an Air-Conditioned Train Compartment | ||||||||||||||||
Autoren: |
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Datum: | 19 Januar 2023 | ||||||||||||||||
Erschienen in: | Journal of Aerosol Science | ||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||
Open Access: | Nein | ||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||
Band: | 170 | ||||||||||||||||
DOI: | 10.1016/j.jaerosci.2023.106139 | ||||||||||||||||
Seitenbereich: | Seiten 1-19 | ||||||||||||||||
Herausgeber: |
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Verlag: | Elsevier | ||||||||||||||||
ISSN: | 0021-8502 | ||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||
Stichwörter: | Aerosol dispersion, train compartment air flow, computational fluid dynamics (CFD), Lagrangian Multiphase Model | ||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||
HGF - Programm: | Verkehr | ||||||||||||||||
HGF - Programmthema: | Schienenverkehr | ||||||||||||||||
DLR - Schwerpunkt: | Verkehr | ||||||||||||||||
DLR - Forschungsgebiet: | V SC Schienenverkehr | ||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | V - RoSto - Rolling Stock, V - NGT BIT (alt) | ||||||||||||||||
Standort: | Göttingen | ||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Bodengebundene Fahrzeuge | ||||||||||||||||
Hinterlegt von: | Schmeling, Dr Daniel | ||||||||||||||||
Hinterlegt am: | 24 Mär 2023 10:32 | ||||||||||||||||
Letzte Änderung: | 24 Mär 2023 10:32 |
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