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Referenzexperiment zum Aerosolpartikel-Transport für dynamische Situationen

Merbold, Sebastian and Hasanuzzaman, Gazi and Buchwald, Tom and Schunk, Christoph and Schmeling, Daniel and Volkmann, André and Brinkema, Robert and Hampel, Uwe and Schröder, Andreas and Egbers, Christoph (2022) Referenzexperiment zum Aerosolpartikel-Transport für dynamische Situationen. In: GALA Fachtagung "Experimentelle Strömungsmechanik" 2022, 29, 9.1-9.8. Deutsche Gesellschaft für Laser-Anemometrie GALA e.V.. GALA Fachtagung "Experimentelle Strömungsmechanik" 2022, 2022-09-06 - 2022-09-08, Ilmenau, Deutschland. ISBN 978-3-9816764-8-8. ISSN 2194-2447.

[img] PDF - Only accessible within DLR
[img] PDF - Only accessible within DLR

Official URL: https://www.gala-ev.org/images/Beitraege/Beitraege2022/pdf/09.pdf


Airborne transport of aerosol particles is the main path of SARS-CoV-2, measles or other respiratory virus infections in closed rooms. Infection risks must be determined through parametric dispersion studies, which can be done by simulations and experiments. The most approaches to study the aerosol transport are in static situations, however, in real world, most situations are rather dynamic with e.g. people walking around, which is expected to have an impact on the aerosol distribution in the room. We are aiming at studying real-life dynamic situations involving several moving persons with head mounted camera systems and evaluate the amount of potentially inhaled aerosol particles at the individuals. To study these, a reference room was established at BTU Cottbus-Sfb, where beside the dynamic situations also static cases are analysed using seated thermal manikins, inducing turbulent thermal plumes and mixed convection flows inside the test room. We use several measurement techniques to reveal the flow fields and especially the aerosol transport and traces. Fast mobility particle sizer (FMPS3091 by TSI Coorp.) measure locally detailed particle size distributions, while calibrated low-cost particulate matter sensors can be adapted in huge number inside the room allowing a space and time resolution of the local concentrations in the diameter range from 0.3-2.5 µm. A mobile measurement system (MMS) developed at DLR controls and reads out the Sensirion SPS30 sensors [DOI: 10.5281/zenodo.6471388]. Flow visualisation is performed for brief analysis of various flow configurations (location of spreader, heating bodies, windows opened, air purification systems used). Finally, attention is given to some cases, which are studied in further detail by the use of large field of view Shake-the-Box Particle Tracking, which employs HFSB as tracers and pulsed LED-arrays for illumination. STB will deliver long time-series of several m² sized Lagrangian and Eulerian velocity fields. We here discuss the experimental configuration of simultaneous Particle counting, tracing and velocity measurements inside the Cottbus aerosol particle reference experiment.

Item URL in elib:https://elib.dlr.de/186425/
Document Type:Conference or Workshop Item (Speech)
Title:Referenzexperiment zum Aerosolpartikel-Transport für dynamische Situationen
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Merbold, SebastianBrandenburgisch Technische Universität Cottbus-SenftenbergUNSPECIFIEDUNSPECIFIED
Hasanuzzaman, GaziBrandenburgisch Technische Universität Cottbus-SenftenbergUNSPECIFIEDUNSPECIFIED
Buchwald, TomBrandenburgisch Technische Universität Cottbus-SenftenbergUNSPECIFIEDUNSPECIFIED
Schunk, ChristophTechnische Universität DresdenUNSPECIFIEDUNSPECIFIED
Schmeling, DanielUNSPECIFIEDhttps://orcid.org/0000-0003-2712-9974UNSPECIFIED
Hampel, UweTechnische Universität DresdenUNSPECIFIEDUNSPECIFIED
Schröder, AndreasUNSPECIFIEDhttps://orcid.org/0000-0002-6971-9262UNSPECIFIED
Egbers, ChristophLehrstuhl für Aerodynamik und Strömungslehre (LAS), Brandenburgische Technische Universität CottbusUNSPECIFIEDUNSPECIFIED
Date:September 2022
Journal or Publication Title:GALA Fachtagung "Experimentelle Strömungsmechanik" 2022
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:9.1-9.8
EditorsEmailEditor's ORCID iDORCID Put Code
Publisher:Deutsche Gesellschaft für Laser-Anemometrie GALA e.V.
Series Name:Fachtagung "Experimentelle Strömungsmechanik"
Keywords:Aerosol, Visualisierung, PIV, PTV STB, Sensoren, Raumventilation
Event Title:GALA Fachtagung "Experimentelle Strömungsmechanik" 2022
Event Location:Ilmenau, Deutschland
Event Type:international Conference
Event Start Date:6 September 2022
Event End Date:8 September 2022
Organizer:Deutsche Gesellschaft für Laser-Anemometrie GALA e.V.
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 - Virtual Aircraft and  Validation
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Ground Vehicles
Institute for Aerodynamics and Flow Technology > Experimental Methods, GO
Deposited By: Schmeling, Dr Daniel
Deposited On:07 Dec 2022 10:58
Last Modified:24 Apr 2024 20:47

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