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Propagation of Localized, Unsteady Heat Loads in Aircraft Cabin Air Flows

Bosbach, Johannes and Dehne, Tobias (2014) Propagation of Localized, Unsteady Heat Loads in Aircraft Cabin Air Flows. 63. Deutscher Luft- und Raumfahrtkongress 2014 "Luft- und Raumfahrt - Antrieb zu neuen Horizonten", 16. - 18. Sept. 2014, Augsburg, Deutschland.

Full text not available from this repository.

Official URL: http://www.dlrk2014.dglr.de

Abstract

The propagation of heat, released from a local source in aircraft cabin air flow was studied experimentally using two different ventilation systems. Besides the state-of-the-art mixing ventilation system, a ceiling based cabin displacement ventilation system was employed. As test environment, we used the Do 728 test facility of the German Aerospace Center in Göttingen. We measured the response of the cabin temperatures to the released heat by evaluating the cross-correlation function between the local temperatures and the normalized surface temperature of the heat source, which was heated periodically. Three different nominal heating powers of the heat source, ranging from 100 W to 400 W, were considered. By analyzing the data, the gradual change of the temperature from a passive to an active scalar could be observed. While the two ventilation systems perform similar at the lower source powers, the distinguished air guiding principles of the momentum- driven MV and the buoyancy-driven CCDV imply different propagation paths at higher power settings of the heat source. For the first time, the spatial spreading of locally released heat in mixing ventilation and ceiling based displacement ventilation was determined in an aircraft cabin.

Item URL in elib:https://elib.dlr.de/88677/
Document Type:Conference or Workshop Item (Speech)
Additional Information:DLRK2014_340202_paper
Title:Propagation of Localized, Unsteady Heat Loads in Aircraft Cabin Air Flows
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bosbach, Johannesjohannes.bosbach (at) dlr.deUNSPECIFIED
Dehne, Tobiastobias.dehne (at) dlr.deUNSPECIFIED
Date:2014
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-9
Series Name:Conference Proceedings on CD-ROM
Status:Published
Keywords:indoor air flow, alternative ventilation concepts, cabin displacement ventilation
Event Title:63. Deutscher Luft- und Raumfahrtkongress 2014 "Luft- und Raumfahrt - Antrieb zu neuen Horizonten"
Event Location:Augsburg, Deutschland
Event Type:national Conference
Event Dates:16. - 18. Sept. 2014
Organizer:DGLR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Micknaus, Ilka
Deposited On:07 Oct 2014 09:53
Last Modified:07 Oct 2014 09:53

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