Hao Wang
College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, China
Bing Ma
College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, China
Jiaojiao Ding
College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, China
Shuaibin Li
College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, 200090, China
ABSTRACT
The aeroelasticity of the wind turbine blade has become more and more important because the blade is becoming larger and larger. The influence of structural viscous damping will be introduced into the time domain analysis of the wind turbine blade, in order to analyze the aeroelastic response and control the flutter region of the wind turbine blade airfoil. The equation of motion for the blade airfoil, with the controllable viscous damping was established, based on the simplified aerodynamic force and torque calculated by the modified blade element momentum theory. The time domain responses of aeroelasticity of the wind turbine blade are analyzed numerically. The simulation results demonstrate that the torsional motion always keeps stable, but the flap motion shows very complicatedly aeroelastic response. Compared with the aeroelastic responses without damping, there are also two critical tip speed ratios with damping considered. When the viscous damping is taken in account, the lower critical tip speed ratio will become larger and the higher critical tip speed ratio will become smaller, as a result, the flutter region will be shortened. And if the damping coefficients are increased, the flutter region will be reduced much more quickly and even there is no flutter region at all when the damping coefficients become much larger. Therefore, if the damping can be controlled and applied to suppress the flutter of the wind turbine blade, it will work very efficiently.
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How to cite this article
Hao Wang, Bing Ma, Jiaojiao Ding and Shuaibin Li, 2013. The Effects of Structural Viscous Damping on the Aeroelasticity of Wind Turbine
Blade. Information Technology Journal, 12: 4480-4486.
DOI: 10.3923/itj.2013.4480.4486
URL: https://scialert.net/abstract/?doi=itj.2013.4480.4486
DOI: 10.3923/itj.2013.4480.4486
URL: https://scialert.net/abstract/?doi=itj.2013.4480.4486
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