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Investigation of three-dimensional dynamic stall on an airfoil using fast response pressure sensitive paint

Gardner, Anthony Donald and Klein, Christian and Sachs, Werner and Henne, Ulrich and Mai, Holger and Richter, Kai (2014) Investigation of three-dimensional dynamic stall on an airfoil using fast response pressure sensitive paint. AHS 70th Annual Forum and Technology Display, 20. - 22. May 2014, Montréal, Québec, Canada.

Full text not available from this repository.

Official URL: http://vtol.org/annual-forum/forum-70/forum-70

Abstract

Dynamic stall on a pitching OA209 airfoil in a wind tunnel is investigated at Mach 0.3 and 0.5 using high-speed pressure sensitive paint (PSP) and pressure measurements. At Mach 0.3 the dynamic stall vortex was observed to propagate faster at the airfoil midline than at the wind tunnel wall, resulting in a “bowed” vortex shape. At Mach 0.5 shock-induced stall was observed, with initial separation under the shock foot and subsequent expansion of the separated region upstream, downstream and along the breadth of the airfoil. No dynamic stall vortex could be observed at Mach 0.5. The investigation of flow control by blowing showed the potential advantages of PSP over pressure transducers for a complex three-dimensional flow.

Item URL in elib:https://elib.dlr.de/85072/
Document Type:Conference or Workshop Item (Speech)
Title:Investigation of three-dimensional dynamic stall on an airfoil using fast response pressure sensitive paint
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gardner, Anthony Donaldtony.gardner (at) dlr.deUNSPECIFIED
Klein, Christianchristian.klein (at) dlr.deUNSPECIFIED
Sachs, Wernerwerner.sachs (at) dlr.deUNSPECIFIED
Henne, Ulrichulrich.henne (at) dlr.deUNSPECIFIED
Mai, Holgerholger.mai (at) dlr.deUNSPECIFIED
Richter, Kaikai.richter (at) dlr.deUNSPECIFIED
Date:2014
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-12
Series Name:Conference Proceedings on CD-ROM
Status:Published
Keywords:Dynamic stall, helicopter, pressure-sensitive paint (PSP)
Event Title:AHS 70th Annual Forum and Technology Display
Event Location:Montréal, Québec, Canada
Event Type:international Conference
Event Dates:20. - 22. May 2014
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
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Institute of Aerodynamics and Flow Technology > Experimental Methods
Institute of Aeroelasticity > Aeroelastic Experiments
Deposited By: Micknaus, Ilka
Deposited On:10 Jun 2014 16:53
Last Modified:17 Feb 2015 14:23

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