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Investigation of the density and velocity distribution of a wing tip vortex by means of stereoscopic Background Oriented Schlieren Method (BOS) and stereoscopic Particle Image Velocimetry (PIV)

Klinge, Falk and Kirmse, Tania and Kompenhans, Jürgen (2004) Investigation of the density and velocity distribution of a wing tip vortex by means of stereoscopic Background Oriented Schlieren Method (BOS) and stereoscopic Particle Image Velocimetry (PIV). In: Proceedings, Online-Publication, pp. 1-9. 12th International Symposium on Application of Laser Techniques to Fluid Mechanics, 2004-07-12 - 2004-07-15, Lisbon (Portugal).

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Abstract

In case of Background Oriented Schlieren Method (BOS) and Particle Image Velocimetry (PIV) the information about the flow can be taken simultaneously in the whole flow field. Coupling these two techniques enables the measurement of the thermodynamic state of the flow. The test in an industrial transonic wind tunnel was carried out to show the feasibility of coupling these two techniques for the investigation of axis-symmetrical flows. The wing tip vortex of a modern large transportation aircraft in the transonic wind tunnel in Göttingen was investigated by means of stereoscopic BOS and stereoscopic PIV. Thus, the density and the velocity distribution of the flow behind the wing tip were observed. Three different flow speeds (Mach = 0.5, 0.6 and 0.7) and four different angles of incidence (-3°, +1°, +2°, +3°) were investigated. Based on investigations about the possibility measuring the local density distribution with BOS accurately, with information on the position of the density variation a further development of the measurement technique was achieved by new post processing algorithms. Further on it was possible to derive criteria for setting up the BOS system in order to obtain reliable quantitative data.

Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information: LIDO-Berichtsjahr=2003, monograph_id=http://in3.dem.ist.utl.pt/lxlaser2004/program.asp,
Title:Investigation of the density and velocity distribution of a wing tip vortex by means of stereoscopic Background Oriented Schlieren Method (BOS) and stereoscopic Particle Image Velocimetry (PIV)
Authors:
AuthorsInstitution or Email of Authors
Klinge, FalkUNSPECIFIED
Kirmse, TaniaUNSPECIFIED
Kompenhans, JürgenUNSPECIFIED
Date:2004
Journal or Publication Title:Proceedings
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Volume:Online-Publication
Page Range:pp. 1-9
Series Name:Session 2 - 6
Status:Published
Keywords:Hintergrundschlieren-Methode, BOS, PIV, Wirbel, Background Oriented Schlieren Method, Particle Image Velocimetry
Event Title:12th International Symposium on Application of Laser Techniques to Fluid Mechanics
Event Location:Lisbon (Portugal)
Event Type:international Conference
Event Dates:2004-07-12 - 2004-07-15
Organizer:R.J. Adrian, D.F.G. Durao, M.V. Heitor; K. Hishida, C. Tropea
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: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Ilka Micknaus
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 19:21

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