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On the development of Doppler global velocimetry for cryogenic wind tunnels

Willert, C. and Stockhausen, G. and Klinner, J. and Beversdorff, M. and Quest, J. and Jansen, U. and Raffel, M. (2003) On the development of Doppler global velocimetry for cryogenic wind tunnels. In: ICIASF 2003 Record, pp. 2-9. IEEE. 20th International Congress on Instrumentation in Aerospace Simulation Facilities (ICIASF), Göttingen, 25-29. Aug. 2003, -. ISBN 0-7803-8189-1.

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Abstract

A specially designed Doppler global velocimetry system (DGV, planar Doppler velocimetry) was tested in a high-speed cryogenic facility at Mach 0.3 to Mach 0.8 and pressures between 1.2 and 2.5 bar. The necessary seeding was achieved by injecting a mixture of gaseous nitrogen and water vapor into the dry and cold tunnel flow which then immediately formed a large amount of small ice crystals. As operational and access conditions are quite restrictive with respect to other facilities, DGV is currently considered the best choice for the non-intrusive measurement of flow fields. A comparison of DGV to the more wide-spread particle image velocimetry technique (PIV) is also given.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2004, monograph_id=IEEE Catalog Number: 03CH37501,
Title:On the development of Doppler global velocimetry for cryogenic wind tunnels
Authors:
AuthorsInstitution or Email of Authors
Willert, C.UNSPECIFIED
Stockhausen, G.UNSPECIFIED
Klinner, J.UNSPECIFIED
Beversdorff, M.UNSPECIFIED
Quest, J.UNSPECIFIED
Jansen, U.UNSPECIFIED
Raffel, M.UNSPECIFIED
Date:2003
Journal or Publication Title:ICIASF 2003 Record
Page Range:pp. 2-9
Editors:
EditorsEmail
Institute of Electrical and Electronics Engineers (IEEE), UNSPECIFIED
Publisher:IEEE
ISBN:0-7803-8189-1
Status:Published
Keywords:planar doppler velocimetry, DGV, ETW, winglet, wingtip device, seeding, ice crystals, doppler global velocimetry, PIV, particle image velocimetry
Event Title:20th International Congress on Instrumentation in Aerospace Simulation Facilities (ICIASF), Göttingen, 25-29. Aug. 2003
Event Location:-
Event Type:Other
Organizer:DLR, Göttingen (Chairman R. Engler)
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Institute of Propulsion Technology
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 13:25

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