Reference : Dynamic interactions of a supercritical aerofoil in the presence of transonic shock buffet
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Aerospace & aeronautics engineering
http://hdl.handle.net/2268/202738
Dynamic interactions of a supercritical aerofoil in the presence of transonic shock buffet
English
Giannelis, N. F. [University of Sydney > School of Aerospace, Mechanical and Mechatronic Engineering > > >]
Vio, G. A. [University of Sydney > School of Aerospace, Mechanical and Mechatronic Engineering > > >]
Dimitriadis, Grigorios mailto [Université de Liège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >]
19-Sep-2016
Proceedings of the International Conference on Noise and Vibration Engineering, ISMA 2016
Paper ID 584
No
No
International
International Conference on Noise and Vibration Engineering, ISMA 2016
from 19-09-2016 to 21-09-2016
KUL
Leuven
Belgium
[en] Aeroelasticity ; Transonic flow ; Shock buffetting
[en] Within a narrow transonic flight region, shock-wave/boundary-layer interactions yield large amplitude, self sustained shock oscillations that are detrimental to both platform handling quality and structural integrity. In this study, the aeroelastic interactions between this transonic buffet instability and a spring-suspended supercritical aerofoil are investigated by means of Reynolds-Averaged Navier-Stokes simulations. Single degree-of-freedom pitching simulations are performed for a range of structural to aerodynamic frequency ratios, sectional mass ratios and levels of structural damping. The results show that for a range of pitch eigenfrequencies above the fundamental buffet frequency, sychronisation of the aerodynamic and structural modes occurs. This so called lock-in phenomenon acts as a mechanism for large amplitude Limit Cycle Oscillation in aircraft structures within the transonic flow regime. The sectional mass and the addition of structural damping are both found to have a pronounced effect on the nature of the limit cycles
Researchers ; Professionals
http://hdl.handle.net/2268/202738
https://www.isma-isaac.be/isma_conf/objectives.html

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