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Numerical analysis of flow-induced nonlinear vibrations of an airfoil with three degrees of freedom
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SYSNO ASEP 0362740 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Numerical analysis of flow-induced nonlinear vibrations of an airfoil with three degrees of freedom Tvůrce(i) Feistauer, M. (CZ)
Horáček, Jaromír (UT-L) RID, ORCID
Růžička, M. (CZ)
Sváček, P. (CZ)Zdroj.dok. Computers & Fluids. - : Elsevier - ISSN 0045-7930
Roč. 49, č. 1 (2011), s. 110-127Poč.str. 18 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova aeroelasticity ; Navier-Stokes equation ; non-linear oscillations ; flutter instability Vědní obor RIV BI - Akustika a kmity CEP GAP101/11/0207 GA ČR - Grantová agentura ČR CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000293941100010 DOI 10.1016/j.compfluid.2011.05.004 Anotace The subject of the paper is the numerical simulation of the interaction of 2D incompressible viscous flow and an airfoil vibrating with large amplitudes. The numerical simulation consists of the FE solution of the Navier-Stokes equations coupled with a system of nonlinear ordinary differential equations describing the airfoil motion. The time-dependent computational domain is treated by the ALE method and by a suitable stabilization of the FE discretization. We analyze the convergence of the method, if the computational mesh is refined and the time step is successively decreased. Also the effect of the loose and strong coupling of the flow and structure problems is tested. The applicability of the method is demonstrated by the comparison with NASTRAN computations and the solution of the coupled fluid-structure problem with increasing far-field velocity up to and behind the flutter instability. The developed method can be used in theoretical prediction of dynamic behaviour of aeroelastic systems especially when the stability has been lost. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2012 Elektronická adresa http://www.sciencedirect.com/science/article/pii/S0045793011001538
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