CAJ | 학술논문

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.
감우다자유도대형풍력궤협형기동계수계산이급기탄은정성분석적복잡성,해문재일충사자유도협형적기출상,채용의합기탄계수간화료기동력계산과정급기탄은정성분석과정,강저료비선성기동력모형적계차.통과여상관문헌이급Theodorsen방법진행기탄은정성분석결과대비,험증료해방법적가고성.의합기동계수적방법가용우NACA적각류협형.
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.