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Investigation of Unsteady Control Surface Aerodynamics on a 2D Supercritical Airfoil Model

Nitzsche, Jens and Brouwers, Kjell and Gardner, Anthony and Mai, Holger and Dietz, Guido and Naudin, Pascal and Leconte, Philippe (2008) Investigation of Unsteady Control Surface Aerodynamics on a 2D Supercritical Airfoil Model. Deutscher Luft- und Raumfahrtkongress 2008, 2008-09-23 - 2008-09-25, Darmstadt, Deutschland (Europa).

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Abstract

We present experimental and numerical investigations of steady and unsteady transonic flow past a 2-d supercritical airfoil equipped with a dynamically deflectable trailing edge flap of 25% chord length. Within the project COSDYNA an experimental data base was created for CFD code validation purposes. It includes steady and unsteady test cases for Mach numbers between 0.5 and 0.82. The unsteady cases comprise global pitch oscillations as well as pure flap oscillations for various excitation frequencies and amplitudes. In this paper DLR’s URANS solver TAU is used for comparative two-dimensional steady and unsteady computations. At this, we focus on five forced harmonic flap oscillation test cases, each for the reduced frequencies 0.1, 0.3 and 0.7. The overall agreement is shown to be satisfactory, even for separated flows.

Item URL in elib:https://elib.dlr.de/56119/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Investigation of Unsteady Control Surface Aerodynamics on a 2D Supercritical Airfoil Model
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Nitzsche, JensUNSPECIFIEDUNSPECIFIED
Brouwers, KjellFaculty of Aerospace Engineering, Technical University of DelftUNSPECIFIED
Gardner, AnthonyInstitute of Aerodynamics and Flow Technology, DLR, 37073 Göttingen, GermanyUNSPECIFIED
Mai, HolgerUNSPECIFIEDUNSPECIFIED
Dietz, GuidoUNSPECIFIEDUNSPECIFIED
Naudin, PascalAeroelasticity and Structural Dynamics Dpt., ONERA, 92322 Châtillon, FranceUNSPECIFIED
Leconte, PhilippeAeroelasticity and Structural Dynamics Dpt., ONERA, 92322 Châtillon, FranceUNSPECIFIED
Date:2008
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:unsteady aerodynamics, control surface, transonic flow, COSDYNA
Event Title:Deutscher Luft- und Raumfahrtkongress 2008
Event Location:Darmstadt, Deutschland (Europa)
Event Type:national Conference
Event Dates:2008-09-23 - 2008-09-25
Organizer:Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V. (DGLR)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flexible Aircraft (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Erdmann, Daniela
Deposited On:14 Nov 2008
Last Modified:12 Dec 2013 20:34

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