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Limit-cylcle-oscillation simulations of Aerostabil windtunnel experiments II

Stickan, Bernd and Dillinger, Johannes and Nitzsche, Jens (2015) Limit-cylcle-oscillation simulations of Aerostabil windtunnel experiments II. International Forum on Aeroelasticity and Structural Dynamics, IFASD 2015, 28 June - 02 July, 2015, St. Petersburg, Russia.

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Abstract

A series of windtunnel experi- ments conducted in the Transonic Windtunnel Göttingen (TWG) al- lowed the observation of Limit- Cycle-Oscillations of a backwards- swept, clean wing for a certain transonic parameter range. As additional feature the Aerostabil wing model shows cambering ef- fects, which have a strong in uence on transonic aerodynamics. This paper is following [13] and in more detail [14]. In these re- ports first simulation results em- ploying computation uid dynam- ics (CFD) and detailed computa- tional structural mechanics (CSM) of the AEROSTABIL experiment have been shown. But the struc- tural modelling has been limited to one dynamic degree of freedom. In this paper the structural rep- resentation is expanded to 2 dy- namic degrees of freedom which al- low a better agreement to the ex- perimental data. The LCO mech- anism is hereby confirmed: Strong shock movement leads to aerody- namic nonlinearities.

Item URL in elib:https://elib.dlr.de/98181/
Document Type:Conference or Workshop Item (Speech)
Title:Limit-cylcle-oscillation simulations of Aerostabil windtunnel experiments II
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Stickan, Berndbernd.stickan (at) dlr.deUNSPECIFIED
Dillinger, Johannesjohannes.dillinger (at) dlr.deUNSPECIFIED
Nitzsche, JensJens.Nitzsche (at) dlr.deUNSPECIFIED
Date:July 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:LCO
Event Title:International Forum on Aeroelasticity and Structural Dynamics, IFASD 2015
Event Location:St. Petersburg, Russia
Event Type:international Conference
Event Dates:28 June - 02 July, 2015
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 - Flexible Aircraft (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Dillinger, Johannes
Deposited On:13 Oct 2015 10:41
Last Modified:13 Oct 2015 10:41

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