Aeroelastic Modeling for Wind Turbine Blade Based on Lifting Surface Model and Nonlinear Beam Theory

作者：Chen, Jin Ge; Shen, Xin; Wang, Guang; Sun, Chong; Zhu, Xiao Cheng; Du, Zhao Hui

来源：Journal of Engineering Thermophysics, 2018, 39(7): 1469-1475.

• Aeroelastic
• Aeroelastic modeling
• Development tendency
• Geometrically exact beams
• Large scale wind turbines
• Lifting surfaces
• Non-linear beam theories
• Three-dimensional deformations

Upscaling of wind turbine rotor is the development tendency for the wind energy industry to reduce the cost of energy. The more light-weight and thereby flexible blade may undergo large deformations in operation. The current commonly used aeroelastic models for the wind turbine blade are mostly based on linear beam theory, lacking consideration of nonlinear geometric effects. Other research works take into account the nonlinear effects by using second-order beam theory. As for the aerodynamic model, BEM model is widely adopted. To meet the requirement of more accurate structural and aerodynamic solvers for designing large-scale wind turbines, a more advanced aeroelastic model is in demand. In this paper, a nonlinear geometrically exact beam theory is implemented as the structural model, in which the blade large deformation effects are accounted. A free wake lifting surface model is used to compute the aerodynamic loads, which is capable to take into consideration of the three-dimensional deformation effects. An advanced aeroelastic model for wind turbine blade is developed by combining the structural and aerodynamic solvers.

• 出版日期2018
• 单位上海交通大学