Discrete Vortex Simulations of the torsional flutter oscillations of a 4:1 rectangular cylinder

Andrianne, Thomas; Dimitriadis, Grigorios

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Discrete Vortex Simulations of the torsional flutter oscillations of a 4:1 rectangular cylinder

Andrianne, Thomas; Dimitriadis, Grigorios

2012 • In Proceedings of the 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

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Keywords :

Discrete Vortex Method; Aeroelasticity; Torsional flutter

Abstract :

[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.

Disciplines :

Aerospace & aeronautics engineering
Civil engineering

Author, co-author :

Andrianne, Thomas ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Département d'aérospatiale et mécanique

Dimitriadis, Grigorios ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale

Language :

English

Title :

Discrete Vortex Simulations of the torsional flutter oscillations of a 4:1 rectangular cylinder

Publication date :

24 April 2012

Event name :

53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

Event organizer :

American Institute of Aeronautics and Astronautics

Event place :

Honolulu, Hawaii, United States

Event date :

from 23-04-2012 to 26-04-2012

Audience :

International

Main work title :

Proceedings of the 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

Publisher :

AIAA

Pages :

AIAA 2012-1988

Available on ORBi :

since 30 April 2012

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Bibliography

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