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Visualization of High-speed Boundary-layer Transition with FPA Infrared Technique.

Müller, L. and Henckels, A. (1997) Visualization of High-speed Boundary-layer Transition with FPA Infrared Technique. In: Notes on Numerical Fluid Mechanics (NNFM), Volume 60: New Results in Numerical and Experimental Fluid Mechanics (Contributions to the 10th AG STAB/DGLR Symposium, Braunschweig, Germany, 1996) Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig/ Wiesbaden.. pp. 245-252.

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Abstract

A modern "Focal Plane Array" (FPA) infrared system was used to visualize natural transition phenomena on a 2.9 degree PTFE cone model, exposed to the hypersonic flow field of the H2K facility at flow conditions of Mach number 6 and Reynolds numbers up to 2x10xx7/m. To study bluntness influence, the model was alternately equipped with four different nose segments of 1 to 15 mm nose radius. Visualized transition locations, measured temperatures, and evaluated heat fluxes were found to be in good agreement with approximate engineering relations taken from literature. By that the infrared system has been qualified for high speed boundary-layer transition detection and the technical performance of such advanced infrared systems was demonstrated, in particular to provide experimental data to validate numerical codes for hypersonic transition prediction.

Document Type:Contribution to a Collection
Additional Information: institution=Körner, H.; Hilbig, R., LIDO-Berichtsjahr=1997,
Title:Visualization of High-speed Boundary-layer Transition with FPA Infrared Technique.
Authors:
AuthorsInstitution or Email of Authors
Müller, L.UNSPECIFIED
Henckels, A.UNSPECIFIED
Date:1997
Journal or Publication Title:Notes on Numerical Fluid Mechanics (NNFM), Volume 60: New Results in Numerical and Experimental Fluid Mechanics (Contributions to the 10th AG STAB/DGLR Symposium, Braunschweig, Germany, 1996)
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 245-252
Publisher:Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig/ Wiesbaden.
Status:Published
Keywords:Grenzschichttransition, Hochgeschwindigkeitsbereich, FPA-Infrarot-Messtechnik.
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L SI - Versuchs- und Simulationstechniken
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: elib DLR-Beauftragter
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 05:30

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