Finite element simulation of airfoil fluttering in turbulent or laminar flow

• ID: 2696, RIV: 10311960
• ISSN: not specified, ISBN: 978-986-04-6098-8
• source: Proceedings of the 14th IFToMM World Congress
• keywords: Finite element; simulation; airfoil; fluttering; turbulent flow; laminar flow
• authors: Jaromír Horáček, Petr Sváček, Miloslav Feistauer
• authors from KNM: Feistauer Miloslav

Abstract

The paper presents results obtained by the developed in-house code based on the finite element (FE) method and applied to the solution of fluid-structure interaction problem in aeroelasticity of aerofoils. We consider flexibly supported aerofoil with three degrees of freedom (3-DOF) in two-dimensional (2D) incompressible viscous flow. The aerofoil vibration is described by nonlinear ordinary differential equations of motion for large vibration amplitudes. The flow is modelled by the Navier-Stokes equations for laminar flow or by the Reynolds averaged Navier-Stokes (RANS) equations for turbulent k -omega model. The flutter behaviour of the aerofoil is numerically simulated in time domain and the results for laminar and turbulent flows are compared.