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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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, Paper)|
|Title:||The Dynamics of Static Stall|
|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|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L RR - Rotorcraft Research|
|DLR - Research theme (Project):||L - The Virtual Aerodynamic Rotorcraft|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Helicopters|
|Deposited By:||Elisabeth Winkels|
|Deposited On:||19 Jul 2012 08:57|
|Last Modified:||19 Jul 2012 08:57|
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