Numerical Simulation of Two Dimensional Flutter in Simple 2D Airfoil

Abstract

Flutter is one of the dynamic aeroelastic problems, it mainly occurs at lifting surfaces when the airplane cruises at high speeds. At relatively low speeds, the torsional stiffness of the wing is enough to counteract the twisting. However, the variation in flutter frequency causes the instabilities in aircraft motion. The numerical simulation of airfoil vibrations is done. To understand Differential Governing Equation for Dynamic Aeroelastic System. This paper focus on theuse of Modal Analysis Method to find the pitching, plunging motion of airfoil& to calculate the frequency, damping ratio when an Airfoil is subjected into Dynamic Aeroelastic instability. Modal analysis method is performed through MATLAB. In ANSYS we analyze the turbulence flow patterns due to pitching and plunging of Airfoil.