空气动力学学报2013，Vol.31Issue(3)：407-412,6.
风力机柔性叶片振动变形对其气动阻尼的影响分析
Analysis of the influence of vibration and deformation of the blade on the aerodynamic damping
摘要
Abstract
In order to study the influence of the vibration and deformation of the blade on the aerodynamic damping of the horizontal axis wind turbine,the aerodynamic force is calculated using the BEM theory,and the dynamic response is calculated using finite element method,and then the aerodynamic damping model is built based on the energy loss method.The influence of flap-wise,edge-wise and twist deformation on the angle of attack is mainly studied.The influence of the flap-wise velocity and edge-wise velocity on inflow angle and inflow velocity is also taken into consideration.As an example,the aerodynamic damping of a 5 MW offshore baseline wind turbine rotor is calculated.The results indicate that the angle of twist and the flapwise deformations have great influence on the aerodynamic damping in flap-wise direction.It may reduce the aerodynamic damping in flap-wise direction,but the edge-wise deformation only affect the aerodynamic damping in edge-wise direction.The deformation has no influence on aerodynamic damping distribution alone the blade.关键词
气动阻尼/能量损失法/柔性叶片/振动变形Key words
aerodynamic damping/ energy loss method/ flexible blade/ vibration and deformation分类
能源科技引用本文复制引用
刘雄,马新稳,沈世,陈严..风力机柔性叶片振动变形对其气动阻尼的影响分析[J].空气动力学学报,2013,31(3):407-412,6.基金项目
国家自然科学基金项目(51276106) （51276106）
教育部高等学校博士点科研基金项目(20124402110005) （20124402110005）
教育部科学技术研究重点项目(212130) （212130）
国际科技合作项目(2010DFB70710) （2010DFB70710）
