Reference : Research on Fast Aeroelastic Modeling Methods for the Transonic Regime
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Aerospace & aeronautics engineering
http://hdl.handle.net/2268/212450
Research on Fast Aeroelastic Modeling Methods for the Transonic Regime
English
Güner, Hüseyin mailto [Université de Liège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >]
Dimitriadis, Grigorios mailto [Université de Liège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >]
Terrapon, Vincent mailto [Université de Liège > Département d'aérospatiale et mécanique > Modélisation et contrôle des écoulements turbulents >]
27-Jun-2017
Proceedings of the International Forum on Aeroelasticity and Structural Dynamics, IFASD 2017
Paper IFASD-2017-083
No
International
International Forum on Aeroelasticity and Structural Dynamics
from 25-06-2017 to 28-06-2017
Como
Italy
[en] Transonic flow ; unsteady aerodynamics modeling ; computational fluid dynamics ; dynamic mode decomposition ; harmonic balance method ; aeroelasticity
[en] Two methods for modeling unsteady transonic flows at low computational cost are presented as a first step towards a fast and accurate aeroelastic calculation methodology for the preliminary design stage in the transonic flow regime. The first approach corresponds to a quasi-steady approximation based on few steady simulations that is improved through the use of an unsteady filter. The second approach is based on the interpolation of dynamic modes between solutions at different frequencies that are obtained either from Dynamic Mode Decomposition (DMD) of unsteady simulations or directly from Harmonic Balance (HB) simulations. The two methods are illustrated in the case of a pitching airfoil in the transonic regime. Results show that the first method is fast and provides a first approximation of the unsteady dynamics. The computational cost of the second approach is higher, but the method provides better results in predicting aerodynamic forces and shock motion for a large range of reduced frequencies.
Researchers ; Professionals
http://hdl.handle.net/2268/212450

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