Aero-elastic behavior of a flexible blade for wind turbine application: A 2D computational study

作者：Hoogedoorn Eelco; Jacobs Gustaaf B; Beyene Asfaw^*

来源：Energy, 2010, 35(2): 778-785.

DOI：10.1016/j.energy.2009.08.030

• Flexible blade
• Wind turbine
• Aeroelasticity
• Part-load
• Adaptive motion

This paper presents a computational study into the static aeroelastic response of a 2D wind turbine airfoil under varying wind conditions. An efficient and accurate code that couples the X-Foil software for computation of airfoil aerodynamics and the MATLAB PDE toolbox for computation of the airfoil deformation is developed for the aero-elastic computations. The code is validated qualitatively against computational results in literature. The impact of a flexibility of the airfoil is studied for a range of design parameters including the free stream velocity, pitch angle, airfoil thickness, and airfoil camber. Static aero-elastic effects have the potential to improve lift and the lift over drag ratio at off-design wind speed conditions. Flexibility delays stall to a large pitch angle, increasing the operating range of a flexible blade airfoil. With increased thickness the airfoil deformation decrease only linearly.

• 出版日期2010-2