摘要
基于"典型剖面"建立风力机叶片二维翼型的颤振方程,根据定常气动理论推导出气动阻尼和气动刚度。为提高叶片的抗振能力,提出向叶片添加阻尼材料来增加叶片结构阻尼的方案,并建立该方案的力学模型。对某国产600 k W风力机叶片的气动特性及阻尼抑颤特性进行数值仿真实验。仿真结果显示,阻尼结构叶片较普通叶片x向颤振最大位移、最大速度分别降低28.2%、34.8%;θ向最大速度降低了17.0%。研究结果可为风力机叶片设计提供参考。
Two-dimensional airfoil dynamic equation was established based on ＂typical profile＂, and aerodynamic stiffness and aerodynamic damping were obtained according to steady aerodynamic theory. In order to improve wind turbine blade anti-vibration capability, adding damping material to blade structure was proposed. Also the damping structural dynamic model was established. The results showed that with damping layer, blade maximum displacement and maximum speed in x direction are reduced by 28.2% and 34. 8% respectively; maximum speed in 0 direction is reduced by 17.0%. The research results can provide references for development of wind turbine blade design.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2014年第7期1196-1202,共7页
Acta Energiae Solaris Sinica
基金
高等学校博士学科点专项科研基金(200801090001)
关键词
风力机
叶片
颤振
阻尼抑颤
wind turbine
blade
aerodynamic flutter
damping suppressing flutter
