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Numerical experiments on aerodynamic resonance in transonic airfoil flow

Nitzsche, Jens and Giepman, Rogier (2013) Numerical experiments on aerodynamic resonance in transonic airfoil flow. In: New results in numerical and experimental fluid mechanics VIII Notes on numerical fluid mechanics and multidisciplinary design, 121. Springer-Verlag. pp. 349-357. ISBN 978-3-642-35679-7. ISSN 1612-2909

Full text not available from this repository.

Official URL: http://link.springer.com/chapter/10.1007%2F978-3-642-35680-3_42

Abstract

We present the results of 2-d URANS simulations of unsteady shock/-boundary layer interaction on a supercritical airfoil in transonic flow. At constant Mach and Reynolds number the angle of attack is gradually increased until self-sustained periodic shock buffet oscillations set in. Subsequently, we focus on the subcritical flow field dynamics below the identified shock buffet onset, where already damped flow oscillations can be observed. Therefore, various fixed-point stable flows are perturbed with small time-periodic deflections of the airfoil geometry or random impulses, after which the particular flow response is analyzed in the frequency domain to identify the dominant aerodynamic eigenvalue. Furthermore, we demonstrate an effective stabilization of sub- and supercritical shock buffet flows by means of a closed-loop controller.

Item URL in elib:https://elib.dlr.de/81125/
Document Type:Contribution to a Collection
Additional Information:Contributions to the 17th STAB/DGLR Symposium Berlin, Germany 2010; Online ISBN: 978-3-642-35680-3; DOI: 10.1007/978-3-642-35680-3_42
Title:Numerical experiments on aerodynamic resonance in transonic airfoil flow
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Nitzsche, Jensjens.nitzsche (at) dlr.deUNSPECIFIED
Giepman, Rogier Faculty of Aerospace Engineering, Delft University of TechnologyUNSPECIFIED
Date:2013
Journal or Publication Title:New results in numerical and experimental fluid mechanics VIII
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:121
Page Range:pp. 349-357
Editors:
EditorsEmail
Dillmann, AndreasDLR, Institut für Aerodynamik und Strömungstechnik
Heller, GerdAirbus Deutschland, Bremen
Kreplin, Hans-PeterDLR, Institut für Aerodynamik und Strömungstechnik
Nitsche, WolfgangTU Berlin, Berlin
Peltzer, InkenBeechcraft Berlin aviation GmbH, Schönefeld
Publisher:Springer-Verlag
Series Name:Notes on numerical fluid mechanics and multidisciplinary design
ISSN:1612-2909
ISBN:978-3-642-35679-7
Status:Published
Keywords:transonic flow, aerodynamic resonance, shock buffet, flow instability, flow separation, shock boundary layer interaction
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 - Simulation & Validation (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Erdmann, Daniela
Deposited On:16 May 2013 10:05
Last Modified:16 May 2013 10:05

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