Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2013.2161.2166WangHaoDingJiaojiaoMaBing1220131312Considering the non-stationary Theodorsen aerodynamic force,
which was often used for the prediction of the classical flutter of the fixed
wing aircraft, the flutter analysis of wind turbine blade airfoil was carried
out through the use of the V-g method, based on the equation of motion of wind
turbine blade airfoil. So the problem of the flutter critical velocity of blade
airfoil should be solved using the eigenproblem and the V-g curve and V-ωcurve
will be given. Then, the influencing factors of the flutter critical speed for
the wind turbine blade airfoil, that is, the chordwise location of the center
of mass, the ratio of flapwise natural frequency to the torsion natural frequency,
the ration of mass and the location of three centers (aerodynamic center, stiffness
center and the center of mass), were researched in great details. As the conclusions,
the guidelines for the blade design, which can improve the flutter critical
speed, can be obtained as: (1) Move forward the center of mass, (2) Keep the
ratio of natural frequency square not equaling and far away from 1, (3) Choose
the area of lower density of air as wind farm and (4) Reduce the distance between
the aerodynamic center, stiffness center and the center of mass. These guidelines
can be applied for the anti-flutter designs of the wind turbine blade.]]>Althaus, D.,1996Hansen, M.H.,2004Hansen, M.H.,2007Hansen, M.O.L., J.N. Sorensen, S. Voutsinas, N. Sorensen and H.A. Madsen,2006Lobitz, D.W.,2004Lobitz, D.W.,2005Manwell, J.F., J.G. McGowan and A.L. Rogers,2009Theodorsen, T.,1935Zhang, P.T. and S.H. Huang,2011Zhao, Y.H.,2007