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A Numerical Assessment of Side Plate Effects for a Low Aspect Ratio Wind Tunnel Model with a Smart Droop Nose Device

Kühn, Timo and Lenfers, Carsten (2012) A Numerical Assessment of Side Plate Effects for a Low Aspect Ratio Wind Tunnel Model with a Smart Droop Nose Device. 30th AIAA Applied Aerodynamics Conference, 25-28 June 2012, New Orleans, LA, USA.

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Abstract

This paper describes a numerical investigation of side plate effects on a quasi-2D wind tunnel model with very small aspect ratio. The target configuration is a two-element high lift profile with a smart droop nose device in landing position. The content of this paper is motivated by a large scale wind tunnel experiment in the Russian Tsagi T-101 wind tunnel in August 2012. Strongly driven by structural and technological aspects, the dimension of the final model is only 5mx3m. Naturally, 3D effects will occur affecting the flow in the middle section. For the damping of these effects, side plates are installed at the tips of the airfoil. The main aspect of the paper is the assessment of different side plate sizes, shapes, and positions and their impact on the flow behavior. For a selected case, the CFD computations are analyzed concerning grid influence and turbulence modelling in 2D and 3D. For the main study the SAO-model was chosen over a k-omega model due to its better grid convergence. In 3D, the asymptotic range of grid convergence is reached and an intermediate grid is found to be sufficient. Regarding the side plate influence, size and positioning of the plates is decisive for the aspired two-dimensionality of the aerodynamics. The main driver is the vertical distance between plate upper edge and airfoil nose.

Item URL in elib:https://elib.dlr.de/79099/
Document Type:Conference or Workshop Item (Paper)
Title:A Numerical Assessment of Side Plate Effects for a Low Aspect Ratio Wind Tunnel Model with a Smart Droop Nose Device
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kühn, Timotimo.kuehn (at) dlr.deUNSPECIFIED
Lenfers, Carstencarsten.lenfers (at) dlr.deUNSPECIFIED
Date:2012
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Aerodynamics, Computational Fluid Dynamics, Wind Tunnel Testing, High Lift, Smart Structures
Event Title:30th AIAA Applied Aerodynamics Conference
Event Location:New Orleans, LA, USA
Event Type:international Conference
Event Dates:25-28 June 2012
Organizer:American Institute of Aeronautics and Astronautics
HGF - Research field:Aeronautics, Space and Transport, Aeronautics, Space and Transport
HGF - Program:Aeronautics, Aeronautics
HGF - Program Themes:Aircraft Research (old), Aircraft Research (old)
DLR - Research area:Aeronautics, Aeronautics
DLR - Program:L AR - Aircraft Research, L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old), L - Simulation & Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Kühn, Timo
Deposited On:11 Dec 2012 15:34
Last Modified:11 Dec 2012 15:34

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