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The Dynamics of Static Stall

Mulleners, Karen and Le Pape, Arnaud and Heine, Benjamin and Raffel, Markus (2012) The Dynamics of Static Stall. 16th International Symposium on Applilcations of Laser Techniques to Fluid Mechanics, 09. - 12. Jul. 2012, Lisbon, Portugal.

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Official URL: http://ltces.dem.ist.utl.pt/lxlaser/lxlaser2012/program.asp


The dynamic process of flow separation on a stationary airfoil in a uniform flow was investigated experimentally by means of time-resolved measurements of the velocity field and the airfoil's surface pressure distribution. The unsteady movement of the separation point, the growth of the separated region, and surface pressure fluctuations were examined in order to obtain information about the chronology of stall development. The early inception of stall is characterised with the abrupt upstream motion of the separation point. During subsequent stall development, large scale shear layer structures are formed and grow while travelling downstream. This leads to a gradual increase of the separated flow region reaching his maximum size at the end of stall development which is marked by a significant lift drop.

Document Type:Conference or Workshop Item (Speech)
Title:The Dynamics of Static Stall
AuthorsInstitution or Email of Authors
Mulleners, KarenLeibniz Universität, Hannover
Le Pape, ArnaudONERA, Meudon, France
Heine, BenjaminUNSPECIFIED
Raffel, Markusmarkus.raffel@dlr.de
Refereed publication:No
In ISI Web of Science:No
Page Range:pp. 1-10
Series Name:Conference Proceedings online
Keywords:time-resolved, pressure distribution, separation point, stall development
Event Title:16th International Symposium on Applilcations of Laser Techniques to Fluid Mechanics
Event Location:Lisbon, Portugal
Event Type:international Conference
Event Dates:09. - 12. Jul. 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft (old)
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: Elisabeth Winkels
Deposited On:19 Jul 2012 08:57
Last Modified:07 Dec 2015 02:23

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