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Influence of non-adiabatic model surface on transition measurements using the Temperature-Sensitive Paint technique in cryogenic wind tunnels

Costantini, Marco and Fey, Uwe and Henne, Ulrich and Klein, Christian (2012) Influence of non-adiabatic model surface on transition measurements using the Temperature-Sensitive Paint technique in cryogenic wind tunnels. 42th AIAA Fluid Dynamics Conference and Exhibit, 25. - 28. Jun. 2012, New Orleans, Louisiana, USA.

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Official URL: http://www.aiaa.com

Abstract

Tests were conducted at the cryogenic blow-down wind tunnel facility DNW-KRG in Göttingen, Germany, with the aim of investigating the influence of the thermal gradients on the model surface on onset of boundary layer laminar-turbulent transition. The laminar airfoil under investigation was tested at high Reynolds and both low and high subsonic Mach numbers. Boundary layer transition was detected non-intrusively by means of the Temperature-Sensitive Paint technique. The effect of the temperature drop occurring during a run at DNW-KRG on the stability of the laminar boundary layer was investigated. Various combinations of flow conditions and angles-of-attack were employed in order to investigate different stability situations. The influence of the temperature difference between flow and model surface on boundary layer transition development was examined. The unfavorable impact of the non-adiabatic thermal boundary condition at the model surface was identified to be dependent on the considered boundary layer stability situation.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Influence of non-adiabatic model surface on transition measurements using the Temperature-Sensitive Paint technique in cryogenic wind tunnels
Authors:
AuthorsInstitution or Email of Authors
Costantini, MarcoUNSPECIFIED
Fey, UweUNSPECIFIED
Henne, UlrichUNSPECIFIED
Klein, ChristianUNSPECIFIED
Date:2012
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-27
Series Name:Conference Proceedings online
Status:Published
Keywords:TSP, boundary layer transition, non-adiabatic model surface
Event Title:42th AIAA Fluid Dynamics Conference and Exhibit
Event Location:New Orleans, Louisiana, USA
Event Type:international Conference
Event Dates:25. - 28. Jun. 2012
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Ilka Micknaus
Deposited On:16 Jul 2012 15:59
Last Modified:09 Oct 2012 15:03

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