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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. Experiments in Fluids, 55 (9), pp. 1-14. Springer. DOI: 10.1007/s00348-014-1807-4 ISSN 0723-4864

Full text not available from this repository.

Official URL: http://link.springer.com/journal/348

Abstract

Dynamic stall on a pitching OA209 airfoil in a wind tunnel is investigated at Mach 0.3 and 0.5 using highspeed 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/90402/
Document Type:Article
Additional Information:Published online: 20 August 2014, Article:1807
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
Journal or Publication Title:Experiments in Fluids
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:55
DOI :10.1007/s00348-014-1807-4
Page Range:pp. 1-14
Publisher:Springer
ISSN:0723-4864
Status:Published
Keywords:three-dimensional dynamic stall, pressure-sensitive paint (PSP), airfoil midline, three-dimensional flow, dynamic stall vortex, helicopter rotor blade
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:15 Sep 2014 13:05
Last Modified:06 Sep 2019 15:25

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