Finite Element Simulation of Aerofoil Fluttering in Turbulent or Laminar Flow

10.6567/IFToMM.14TH.WC.OS19.002

J. Horáček；P. Sváček；M. Feistauer

aeroelasticity ； flutter ； post-flutter vibrations ； RANS equations ； turbulent k -ω model ； nonlinear vibrations

Proceedings of the 14th IFToMM World Congress

14th-4（2015 / 11 / 04）

629 - 634

英文

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 -ω model. The flutter behaviour of the aerofoil is numerically simulated in time domain and the results for laminar and turbulent flows are compared.