|Reference : Discrete Vortex Simulations of the torsional flutter oscillations of a 4:1 rectangula...|
|Scientific congresses and symposiums : Paper published in a book|
|Engineering, computing & technology : Aerospace & aeronautics engineering|
Engineering, computing & technology : Civil engineering
|Discrete Vortex Simulations of the torsional flutter oscillations of a 4:1 rectangular cylinder|
|Andrianne, Thomas [Université de Liège - ULg > Département d'aérospatiale et mécanique > Département d'aérospatiale et mécanique >]|
|Dimitriadis, Grigorios [Université de Liège - ULg > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >]|
|Proceedings of the 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference|
|53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference|
|from 23-04-2012 to 26-04-2012|
|American Institute of Aeronautics and Astronautics|
|United States of America|
|[en] Discrete Vortex Method ; Aeroelasticity ; Torsional flutter|
|[en] This work presents aeroelastic simulations of a 2D bluff-body around its pitching degree
of freedom. The numerical tool consists in an aerodynamic solver based on the Discrete
Vortex Method (DVM), coupled with a linear structural model.
The shape of the bluff-body is a sharp edged rectangular cylinder with a side ratio equal
to 4. The numerical results are compared to the experimental measurements recently obtained
by the authors.8 The validation is carried out in three steps: first the frequency
content of the flow-field in the wake of the static body is investigated. Then the simulated
unsteady flow-field around the imposed pitching motion of the body is compared to
experimental flow visualizations. This comparison is performed using Proper Orthogonal
Decomposition (POD). Finally, the simulation of the global aeroelastic behaviour, based
on the coupling of the DVM code to the structural model of the pitching degree of freedom
is carried out and the results are compared to measured aeroelastic responses..
Very good agreements are found between numerical and experimental results, demonstrating
the capabilities of the numerical tool to simulate complex unsteady aerodynamics
around an oscillating bluff-body.
|Researchers ; Professionals|
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