TY - JOUR
T1 - Numerical Simulation of Airfoil Vibrations Induced by Turbulent Flow
AU - Feistauer , Miloslav
AU - Horáček , Jaromír
AU - Sváček , Petr
JO - Communications in Computational Physics
VL - 1
SP - 146
EP - 188
PY - 2018
DA - 2018/04
SN - 17
DO - http://doi.org/10.4208/cicp.181213.230514a
UR - https://global-sci.org/intro/article_detail/cicp/10954.html
KW - 
AB - <p style="text-align: justify;">The subject of the paper is the numerical simulation of the interaction of
two-dimensional incompressible viscous flow and a vibrating airfoil with large amplitudes.
The airfoil with three degrees of freedom performs rotation around an elastic
axis, oscillations in the vertical direction and rotation of a flap. The numerical simulation
consists of the finite element solution of the Reynolds averaged Navier-Stokes
equations combined with Spalart-Allmaras or k−ω turbulence models, coupled with a
system of nonlinear ordinary differential equations describing the airfoil motion with
consideration of large amplitudes. The time-dependent computational domain and
approximation on a moving grid are treated by the Arbitrary Lagrangian-Eulerian formulation
of the flow equations. Due to large values of the involved Reynolds numbers
an application of a suitable stabilization of the finite element discretization is
employed. The developed method is used for the computation of flow-induced oscillations
of the airfoil near the flutter instability, when the displacements of the airfoil
are large, up to ±40 degrees in rotation. The paper contains the comparison of the
numerical results obtained by both turbulence models.</p>