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Advanced Measurement Techniques for Cryogenic Testing

Fey, Uwe and Egami, Yasuhiro and Konrath, Robert and Koop, Lars and Klein, Christian and Kompenhans, Jürgen (2008) Advanced Measurement Techniques for Cryogenic Testing. Artes Gráficas Torres S.L., Morales 17, 08029 Barcelona, Spain. 5th. European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008), 2008-06-30 - 2008-07-04, Venice (Italy). ISBN 978-84-96736-55-9.

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Abstract

Future generations of aircraft will be developed applying “High Reynolds Number Design”, using advanced computational aerodynamics and industry-scale cryogenic wind tunnels which enable aerodynamic optimization tests for flight Reynolds numbers on scaled models. For validation purposes and to further improve the computational techniques, accurate aerodynamic field-data must be supplied during the design process including transition locations, surface pressure distributions, velocity fields and acoustic field data. Thus, modern, image based measurement techniques commonly used in “warm” industrial wind tunnels have to be made also available for productive testing in cryogenic wind tunnels. For example, the method of Temperature-Sensitive Paint (TSP) for transition detection at in a cryogenic wind tunnel (cryoTSP) has been optimized within the last years and is now ready to use for productive testing. In the European Transonic Windtunnel (ETW), cryoTSP now has substituted a highly sophisticated, cryogenic infrared camera. Transition patterns gathered by cryoTSP on full models at transonic Mach numbers, as well as on half models in high lift configuration at low speed Mach numbers (Fig.2), clearly can show the complex structure of laminarto-turbulent boundary layer transition and further exhibit additional information about transition zone length and underlying instability.

Document Type:Conference or Workshop Item (Other)
Additional Information:Abstract
Title:Advanced Measurement Techniques for Cryogenic Testing
Authors:
AuthorsInstitution or Email of Authors
Fey, UweUNSPECIFIED
Egami, YasuhiroUNSPECIFIED
Konrath, RobertUNSPECIFIED
Koop, LarsUNSPECIFIED
Klein, ChristianUNSPECIFIED
Kompenhans, JürgenUNSPECIFIED
Date:2008
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:p. 138
Editors:
EditorsEmail
Schrefler, B. A.UNSPECIFIED
Perego, U.UNSPECIFIED
Publisher:Artes Gráficas Torres S.L., Morales 17, 08029 Barcelona, Spain
Series Name:Book of Abstract
ISBN:978-84-96736-55-9
Status:Published
Keywords:Temperature-Sensitive Paint (TSP), cryogenic wind tunnel (cryoTSP), high Reynolds numbers
Event Title:5th. European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008)
Event Location:Venice (Italy)
Event Type:international Conference
Event Dates:2008-06-30 - 2008-07-04
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:28 Jul 2008
Last Modified:27 Apr 2009 14:51

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