基于拟合气弹系数的气弹稳定性分析  

AEROELASTIC STABILITY ANALYSIS BASED ON FITTED AERODYNAMIC COEFFICIENTS

作　　者：刘廷瑞[1] 任勇生[1] 杨兴华[1] 

机构地区：[1]山东科技大学机械电子工程学院,青岛266510

出　　处：《太阳能学报》2010年第4期513-516,共4页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(10972124);山东省自然科学基金(Y2006F37);山东省教育厅科技计划(J08LB04)

摘　　要：鉴于多自由度大型风力机叶型气动系数计算以及气弹稳定性分析的复杂性,该文在一种四自由度叶型的基础上,采用拟合气弹系数简化了气动力计算过程及气弹稳定性分析过程,降低了非线性气动力模型的阶次。通过与相关文献以及Theodorsen方法进行气弹稳定性分析结果对比,验证了该方法的可靠性。拟合气动系数的方法可用于NACA的各类叶型。In view of the computing complexity of aerodynamic coefficients and the complicacy of aeroelastic stability analysis for large wind turbine blade section of multiple DOF,an approach of fitting aerodynamic coefficients Was developed to simplify aerodynamic forces computation,and to reduce order of nonlinear equation,so as to linearize and simplify aeroelastic stability analysis.Compared with related literature and Theodorsen results,the fitting approach shows certain reliability and can also be used for some other blade sections of NACA.

关 键 词：风力机叶片 气动系数 气弹稳定性 颤振 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]