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Experimental Analysis of the Interaction between Streamwise Vortices and a High-Lift Airfoil

Landa, Tim and Klug, Lorentz and Radespiel, Rolf and Probst, Silvia and Knopp, Tobias (2019) Experimental Analysis of the Interaction between Streamwise Vortices and a High-Lift Airfoil. In: AIAA Scitech Forum, 2019. AIAA. AIAA SciTech 2019 Forum, 07.-11.01.2019, San Diego, CA, USA. doi: 10.2514/6.2019-0576. ISBN 978-162410578-4.

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Official URL: https://doi.org/10.2514/6.2019-0576


The present paper presents experimental investigations of the interaction between streamwise vortices and a high-lift airfoil. A delta wing upstream of the high-lift airfoil generates two vortices, which proceed on the suction side of the airfoil and interact with the local flow field. The characteristics of the vortices resemble those of a nacelle strake vortex scaled to wind-tunnel dimensions. Measurements of the static pressure distributions and oilflow visualizations with and without the upstream located delta wing reveal the effect of the vortices on the high-lift airfoil. Furthermore, stereo-PIV measurements at different streamwise positions upstream of the high-lift airfoil and above the suction side show the development of the vortex characteristics. The investigations comprise variations of the angle of attack of the high-lift airfoil and the vertical position of the delta wing. The presence of the vortices clearly affects the flowfield of the high-lift configuration. Also, the characteristics of the vortex considerably change while proceeding downstream through an interaction with the flow field of the high-lift airfoil.

Item URL in elib:https://elib.dlr.de/124678/
Document Type:Conference or Workshop Item (Speech)
Additional Information:AIAA 2019-0576 Session: Airfoil/Wing/Configuration Aerodynamics II
Title:Experimental Analysis of the Interaction between Streamwise Vortices and a High-Lift Airfoil
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Landa, TimTU Braunschweig, ISMUNSPECIFIED
Klug, LorentzTU Braunschweig, ISMUNSPECIFIED
Radespiel, RolfTU Braunschweig, ISMUNSPECIFIED
Date:7 January 2019
Journal or Publication Title:AIAA Scitech Forum, 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Series Name:Conference Proceedings online
Keywords:Delta wing; high-lift airfoil; Stereo PIV; vortex
Event Title:AIAA SciTech 2019 Forum
Event Location:San Diego, CA, USA
Event Type:international Conference
Event Dates:07.-11.01.2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, GO
Deposited By: Grabe, Dr. Cornelia
Deposited On:22 May 2019 19:21
Last Modified:18 Dec 2019 16:57

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