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Computational aeroelastic investigation of a transonic limit-cycle-oscillation experiment at a transport aircraft wing model

Stickan, Bernd and Dillinger, Johannes and Schewe, Günter (2014) Computational aeroelastic investigation of a transonic limit-cycle-oscillation experiment at a transport aircraft wing model. Journal of Fluids and Structures. Elsevier. DOI: 10.1016/j.jfluidstructs.2014.04.014 ISSN 0889-9746

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1016/j.jfluidstructs.2014.04.014

Abstract

Aeroelastic measurements of a three-dimensional wing model, the so-called Aerostabil wing, were conducted in the Transonic Windtunnel Göttingen. This clean, backward-swept wing allowed the experimental investigation of limit cycle oscillations in a certain transonic parameter range. In this paper, a detailed insight into the observed physical phenomena, especially the measured limit cycle oscillations, is presented by means of CFD–CSM coupled simulations. These simulations on the basis of a detailed structural finite element model reveal the specific properties of the Aerostabil wing and furthermore allow investigating the unstable behavior of this windtunnel model for transonic flow settings. The aerodynamic characteristics include a two-shock system and large flow separation areas, further increasing the complexity of the aeroelastic problem. A structural single degree-of-freedom system is used for the prediction of the experimental stability range and the limit cycle oscillation investigations. Due to the good agreement of simulation and experiment the limit cycle oscillations can be explained by means of nonlinear aerodynamic effects.

Item URL in elib:https://elib.dlr.de/90322/
Document Type:Article
Title:Computational aeroelastic investigation of a transonic limit-cycle-oscillation experiment at a transport aircraft wing model
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Stickan, Berndbernd.stickan (at) dlr.deUNSPECIFIED
Dillinger, Johannesjohannes.dillinger (at) dlr.deUNSPECIFIED
Schewe, Günterguenter.schewe (at) dlr.deUNSPECIFIED
Date:2014
Journal or Publication Title:Journal of Fluids and Structures
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.jfluidstructs.2014.04.014
Publisher:Elsevier
ISSN:0889-9746
Status:Published
Keywords:aerostabil, limit-cycle oscillations, fluid–structure interaction, transonic flow, single degree-of-freedom flutter, unsteady aerodynamics, static aeroelasticity
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
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Grischke, Birgid
Deposited On:29 Oct 2014 10:43
Last Modified:10 Jan 2019 15:48

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