Počet záznamů: 1  

Numerical Simulation of Airfoil Vibrations Induced by Turbulent Flow

  1. 1.
    0437115 - ÚT 2016 RIV CN eng J - Článek v odborném periodiku
    Feistauer, M. - Horáček, Jaromír - Sváček, P.
    Numerical Simulation of Airfoil Vibrations Induced by Turbulent Flow.
    Communications in Computational Physics. Roč. 17, č. 1 (2015), s. 146-188. ISSN 1815-2406. E-ISSN 1991-7120
    Grant CEP: GA ČR(CZ) GAP101/11/0207
    Institucionální podpora: RVO:61388998
    Klíčová slova: fluid-structure interaction * flow induced vibrations * turbulence models * finite element method
    Kód oboru RIV: BI - Akustika a kmity
    Impakt faktor: 1.778, rok: 2015

    The subject of the paper is the numerical simulation of the interaction of two-dimensional incompressible viscous flow and a vibrating airfoil with large amplitudes. The airfoil with three degrees of freedom performs rotation around an elastic axis, oscillations in the vertical direction and rotation of a flap. The numerical simulation consists of the finite element solution of the Reynolds averaged Navier-Stokes equations combined with Spalart-Allmaras or κ–ω turbulence models, coupled with a system of nonlinear ordinary differential equations describing the airfoil motion with consideration of large amplitudes. The time-dependent computational domain and approximation on a moving grid are treated by the Arbitrary Lagrangian-Eulerian formulation of the flow equations. Due to large values of the involved Reynolds numbers an application of a suitable stabilization of the finite element discretization is employed. The developed method is used for the computation of flow-induced oscillations of the airfoil near the flutter instability, when the displacements of the airfoil are large, up to ±40 degrees in rotation. The paper contains the comparison of the numerical results obtained by both turbulence models.
    Trvalý link: http://hdl.handle.net/11104/0241045

     
     
Počet záznamů: 1  

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