Reference : Limit Cycle Oscillations of a Delta Wing in a Low Speed Wind Tunnel
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Aerospace & aeronautics engineering
http://hdl.handle.net/2268/72542
Limit Cycle Oscillations of a Delta Wing in a Low Speed Wind Tunnel
English
Korbahti, Banu [University of Istanbul > > > >]
Kagambage, Emile [Université de Liège - ULg > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >]
Andrianne, Thomas mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Département d'aérospatiale et mécanique >]
Watrin, Damien [Université de Liège - ULg > Département d'aérospatiale et mécanique > Département d'aérospatiale et mécanique > >]
Dimitriadis, Grigorios mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >]
22-Sep-2010
Proceedings of ISMA2010
Katholieke Universiteit Leuven
3617-3632
No
No
International
9789073802872
Leuven
Belgium
International Conference on Noise and Vibration Engineering (ISMA 2010)
20-09-2010 to 22-09-2010
Katholieke Universiteit Leuven
Leuven
Belgium
[en] Delta Wings ; Limit Cycle Oscillations ; Bifurcation
[en] Limit cycle oscillations involving Delta wings are an important area of research in modern aeroelasticity. Such phenomena can be the result of structural or aerodynamic nonlinearity. In this paper, a flexible half-Delta wing is tested in a low speed wind tunnel in order to investigate its dynamic response. Specifically, an investigation to determine the effects of a steady angle of attack on nonlinear Limit Cycle Oscillations (LCO) of a delta wing-plate model in low subsonic flow has been undertaken. It was found that, at several combinations of airspeed and angle of attack, the wing undergoes limit cycle oscillations. Two types of such oscillations are observed. One of them is low amplitude, low complexity limit cycle oscillations that occur at lower airspeeds; the other is high amplitude, high complexity limit cycle oscillations that occur a
higher airspeeds and can appear abruptly. Some of the LCOs are the result of a subcritical Hopf bifurcation occurring at low steady angles of attack. At higher angles, a nontypical bifurcation was observed, whereby LCOs appear, grow with airspeed but then diminish and finally disappear as the airspeed is increased further.
Researchers ; Professionals
http://hdl.handle.net/2268/72542

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