科氏力对水平轴风力机叶片的影响  

The influence of Coriolis force on the horizontal axis wind turbine blade

作　　者：韩新月[1] 申新贺[1] 陈严[1] 吴涛[1] 

机构地区：[1]汕头大学能源研究所,广东汕头515063

出　　处：《能源工程》2008年第3期8-11,共4页Energy Engineering

基　　金：广东省科技计划项目(2006A1071001)

摘　　要：基于叶素理论和风力机的运行特点,建立了叶片的科氏加速度理论计算模型;应用有限元原理,给出了考虑科氏力时风力机叶片频率的计算方法;根据小扰动思想推导出了叶片在旋转状态下的动频分量。最后应用以上模型和方法,以600kW风力机叶片为例进行了实体建模、动力学分析,得出频率及相应振型,结果表明科氏力对叶片的频率有一定程度的影响。Coriolis acceleration theoretical model of horizontal axis wind turbine blade was established based on the blade element theory and characteristics of wind turbine blade, The calculating method of wind turbine blades frequency was gave, according to finite element principle and considering the Coriolis force, The dynamic frequency components of blade in the rotation were derived on the basis of small disturbance theory, Finally using the model and method, 600 kW wind turbine blade was taken as an example to do the entity modeling and dynamic analysis, frequencies and the corresponding vibration modes were gol, the results showed that the Coriolis force had a certain degree of impact on the frequency of blades.

关 键 词：风力机 科氏力 频率 有限元 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]