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Stabilized finite element approximations of flow over a self-oscillating airfoil
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SYSNO ASEP 0349276 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Stabilized finite element approximations of flow over a self-oscillating airfoil Author(s) Sváček, P. (CZ)
Horáček, Jaromír (UT-L) RID, ORCIDSource Title Proceedings of ENUMATH 2009. - Berlin : Springer, 2010 / Kreiss G. - ISBN 978-3-642-11794-7 Pages s. 847-854 Number of pages 8 s. Action European Conference on Numerical Mathematics and Advanced Application 2009 /8./ Event date 10.06.2009-13.06.2009 VEvent location Uppsala Country SE - Sweden Event type EUR Language eng - English Country DE - Germany Keywords nonlinear aeroelasticity ; flutter ; airfoil with 2 degrees of freedom Subject RIV BI - Acoustics R&D Projects OC09019 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation 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. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2011
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