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Numerical and experimental study of aerosol dispersion in the Do728 aircraft cabin

Schmeling, Daniel and Shishkin, Andrey and Schiepel, Daniel and Wagner, Claus (2023) Numerical and experimental study of aerosol dispersion in the Do728 aircraft cabin. CEAS Aeronautical Journal, pp. 1-18. Springer. doi: 10.1007/s13272-023-00644-3. ISSN 1869-5590.

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Official URL: https://link.springer.com/article/10.1007/s13272-023-00644-3


The dispersion of aerosols originating from one source, the ‘index’ passenger, within the cabin of the aircraft Do728 is studied experimentally using an aerosol-exhaling thermal manikin and in Reynolds-averaged Navier–Stokes simulations (RANS). The overall aim of the present study is the experimental determination of the aerosol spreading for the state-of-the-art mixing ventilation (MV) and to evaluate the potential of alternative ventilation concepts for controlling the aerosol spreading in RANS. For MV, the experiments showed that the ratio of inhaled to exhaled aerosol particles drops below 0.06% (volume ratio) for distances larger than two seat rows from the source. However, within a single row, the observed ratio is higher. Further, the dispersion is much weaker for a standing than for a seated index passenger. High air exchange rates and a wellguided flow prevent a dispersion of the aerosols in high concentrations over larger distances. Additionally, the positive effect of a mask and an increased air flow rate, and especially their combination are shown. In the complementary conducted RANS, the advantages of floor-based cabin displacement ventilation (CDV) which is alternative ventilation concept to MV, regarding spreading lengths and the dwell time of the aerosols in the cabin were determined. The obtained results also underline the importance of the flow field for the aerosol dispersion. Further, additional unsteady RANS (URANS) simulations of the short-term process of the initial aerosol cloud formation highlighted that the momentum decay of the breathing and the evaporation processes take place within a few seconds only.

Item URL in elib:https://elib.dlr.de/185425/
Document Type:Article
Title:Numerical and experimental study of aerosol dispersion in the Do728 aircraft cabin
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schmeling, DanielUNSPECIFIEDhttps://orcid.org/0000-0003-2712-9974UNSPECIFIED
Schiepel, DanielUNSPECIFIEDhttps://orcid.org/0000-0002-3703-3514UNSPECIFIED
Wagner, ClausUNSPECIFIEDhttps://orcid.org/0000-0003-2273-0568UNSPECIFIED
Date:15 February 2023
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-18
EditorsEmailEditor's ORCID iDORCID Put Code
Keywords:aircraft cabin, aerosol dispersion, COVID-19, mixing ventilation, displacement ventilation
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, L - MRO and Cabin
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Ground Vehicles
Deposited By: Schmeling, Dr Daniel
Deposited On:24 Mar 2023 10:50
Last Modified:24 Mar 2023 10:50

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