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High Reynolds number transition detection by means of temperature sensitive paint

Fey, Uwe and Egami, Yasuhiro and Engler, Rolf (2006) High Reynolds number transition detection by means of temperature sensitive paint. 44th AIAA Aerospace Sciences Meeting and Exhibit, 2006-01-09 - 2006-01-12, Reno, Nevada (USA).

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Abstract

Simulating true flight Reynolds numbers with scaled models requires the use of cryogenic wind tunnels. Transition detection in ‘warm’ wind tunnels can be realized using commercially available IR cameras. In cryogenic testing, IR imaging becomes more difficult because of the reduction in radiated energy and the shift to longer wavelengths. Therefore, the temperature sensitive paint method has become a promising alternative here. Transition detection measurements were carried out using different models in several cryogenic wind tunnels, namely the European Transonic Windtunnel, the pilot facility of the European Transonic Windtunnel, the cryogenic wind tunnel in cologne and the cryogenic Ludwieg Tube facility of in Göttingen. With the temperature sensitive paint method, similar information can be obtained as for IR imaging in warm wind tunnels, but with higher spatial resolution. This means, that one can determine the instability leading to transition, namely Tollmien-Schlichting or crossflow instabiltiy, observe laminar separation bubbles (and turbulent reattachment), detect flow separation and locate shocks as well as vortex signatures.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2006, 5 Disc, CD Code: 778-241002
Title:High Reynolds number transition detection by means of temperature sensitive paint
Authors:
AuthorsInstitution or Email of Authors
Fey, UweUNSPECIFIED
Egami, YasuhiroUNSPECIFIED
Engler, RolfUNSPECIFIED
Date:2006
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Volume:Disc 3
Page Range:pp. 1-19
Series Name:AIAA Meeting Papers on Disc
Status:Published
Keywords:Reynolds numbers, cryogenic wind tunnels, temperature sensitive paint method
Event Title:44th AIAA Aerospace Sciences Meeting and Exhibit
Event Location:Reno, Nevada (USA)
Event Type:international Conference
Event Dates:2006-01-09 - 2006-01-12
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Ilka Micknaus
Deposited On:19 Jun 2006
Last Modified:27 Apr 2009 04:56

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