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Differential Infrared Thermography for Unsteady Boundary-Layer Transition Measurements

Raffel, Markus and Merz, Christoph B. (2014) Differential Infrared Thermography for Unsteady Boundary-Layer Transition Measurements. AIAA Journal, 52 (9), pp. 2090-2093. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.J053235. ISSN 0001-1452.

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Official URL: http://arc.aiaa.org/doi/pdf/10.2514/1.J053235


Unsteady laminar/turbulent boundary-layer transition, dynamic flow separation, and reattachment are of special interest in recent propeller and helicopter aerodynamics, since modern rotor blade design methodologies increasingly take dynamic characteristics into account. Sophisticated experimental techniques for the determination of the skin-friction distribution (thereby also detecting transition) have to be developed in order to improve and validate numerical prediction and design methods. The complex hot-film anemometry has successfully been used in order to investigate the unsteady boundary-layer transition on pitching airfoils and large-scale helicopter rotor models in forward-flight configurations.

Item URL in elib:https://elib.dlr.de/89549/
Document Type:Article
Additional Information:Published online: 16 June 2014, Paper: 2090
Title:Differential Infrared Thermography for Unsteady Boundary-Layer Transition Measurements
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Raffel, Markusmarkus.raffel (at) dlr.deUNSPECIFIED
Merz, Christoph B.christoph.merz (at) dlr.deUNSPECIFIED
Journal or Publication Title:AIAA Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.2514/1.J053235
Page Range:pp. 2090-2093
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Series Name:Technical Notes
Keywords:helicopter rotor models, boundary-layer transition, cooler wind-tunnel flow, laminar flow
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Deposited By: Micknaus, Ilka
Deposited On:15 Sep 2014 13:06
Last Modified:08 Mar 2018 18:42

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