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A Stereo PIV Investigation of a Vortex Breakdown Above a Delta Wing by Analysis of the Vorticity Field.

Henning, Arne and Rütten, Markus and Wagner, Claus and Raffel, Markus (2005) A Stereo PIV Investigation of a Vortex Breakdown Above a Delta Wing by Analysis of the Vorticity Field. 35th AIAA Fluid Dynamics Conference and Exhibit, 2005-06-06 - 2005-06-09, Toronto, Ontario (Canada). ISSN Session 49-FD-13

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Official URL: http://www.aiaa.org

Abstract

The vortex breakdown above a generic delta wing was experimentally investigated in order to contribute to the better understanding of this flow phenomenon. The velocity field inside the breakdown region was measured with a three component Particle Image Velocimetry (PIV) system with a high spatial resolution and accuracy, such that the vortical structure could be analysed based on the vorticity field. One research goal was to get more information about the physical mechanism which lead to the dominant vortex breakdown phenomenon. Another important goal of the performed measurement campaign was to investigate the influence of the lower sweep angle on the flow structures. Additionally we compared our PIV and force measurement data with results of numerical simulations and the therewith identified structure of the vortex breakdown in the front part of the delta wing. We were able to confirm the occurrence of a bubble type vortex breakdown predicted by the numerical simulations.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:A Stereo PIV Investigation of a Vortex Breakdown Above a Delta Wing by Analysis of the Vorticity Field.
Authors:
AuthorsInstitution or Email of Authors
Henning, ArneUNSPECIFIED
Rütten, MarkusUNSPECIFIED
Wagner, ClausUNSPECIFIED
Raffel, MarkusUNSPECIFIED
Date:2005
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Volume:CD-ROM
Page Range:pp. 1-12
Series Name:Conference Proceedings
ISSN:Session 49-FD-13
Status:Published
Keywords:Stereo PIV Investigation, Particle Image Velocimetry (PIV)
Event Title:35th AIAA Fluid Dynamics Conference and Exhibit
Event Location:Toronto, Ontario (Canada)
Event Type:international Conference
Event Dates:2005-06-06 - 2005-06-09
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Deposited By: Ilka Micknaus
Deposited On:04 Mar 2008
Last Modified:27 Apr 2009 14:41

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