Title: Contribution to finite element modelling of airfoil aeroelastic instabilities
Authors: Horáček, Jaromír
Sváček, Petr
Růžička, Martin
Feistauer, Miloslav
Citation: Applied and Computational Mechanics. 2007, vol. 1, no. 1, p. 43-52.
Issue Date: 2007
Publisher: University of West Bohemia
Document type: článek
URI: http://www.kme.zcu.cz/acm/old_acm/full_papers/acm_vol1no1_p006.pdf
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: numerické simulace;nelineární vibrace;aeroelsticita;nelineární rovnice;airfoil;modelování metodou konečných prvků
Keywords in different language: numerical simulations;nonlinear vibrations;aeroelasticity;nonlinear equations;airfoil;finite element modelling
Abstract: Nonlinear equations of motion for a flexibly supported rigid airfoil with additional degree of freedom for controlling of the profile motion by a trailing edge flap are derived for large vibration amplitudes. Preliminary results for numerical simulation of flow-induced airfoil vibrations in a laminar incompressible flow are presented for the NACA profile 0012 with three-degrees of freedom (vertical translation, rotation around the elastic axis and rotation of the flap). The developed numerical solution of the Navier – Stokes equations and the Arbitrary Eulerian-Lagrangian approach enable to consider the moving grid for the finite element modelling of the fluid flow around the oscillating airfoil. A sequence of numerical simulation examples is presented for Reynolds numbers up to about Re 105, when the system loses the aeroelastic stability, and when the large displacements of the profile and a post-critical behaviour of the system take place.
Rights: © 2007 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 1, number 1 (2007)
Volume 1, number 1 (2007)

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/1826

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