Stabilized finite element approximations of flow over a self-oscillating airfoil

0349276 - ÚT 2011 RIV DE eng C - Konferenční příspěvek (zahraniční konf.)
Sváček, P. - Horáček, Jaromír
Stabilized finite element approximations of flow over a self-oscillating airfoil.
Proceedings of ENUMATH 2009. Berlin: Springer, 2010 - (Kreiss, G.), s. 847-854. ISBN 978-3-642-11794-7.
[European Conference on Numerical Mathematics and Advanced Application 2009 /8./. Uppsala (SE), 10.06.2009-13.06.2009]
Grant CEP: GA MŠMT OC09019
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: nonlinear aeroelasticity * flutter * airfoil with 2 degrees of freedom
Kód oboru RIV: BI - Akustika a kmity

The paper presents the comparison of numerical solution of a 2D aeroelastic problem and experimental results. For the numerical approximation the coupled formulation of a turbulent flow over an oscillating solid airfoil is considered. The flow is modelled by the incompressible Reynolds averaged Navier-Stokes (RANS) equations rewritten in Arbitrary Lagrangian-Eulerian (ALE) form and discretized by the stabilized finite element metod (FEM). The numerical results are compared with the result of optical measurements of flow field around elastically supported vibrating double circular arc (DCA) 18% profile. The measurements were performed above the critical airflow velocity for loss of the system stability by flutter. The numerical results for the time dependent pressure distribution on the fluttering airfoil are presented.
Trvalý link: http://hdl.handle.net/11104/0189559