摘要
为了扩展出新的风力机翼型型线和建立便于优化统一的数学模型,基于儒可夫斯基保角变换理论和西奥道生法,提出一种通用的翼型形状参数化集成表达函数(形状函数),分析并推导生成翼型的控制条件方程,研究翼型设计空间覆盖特性情况。以FX66-S196-V1翼型为例,研究应用参数化集成方法生成的不同阶次拟合翼型的几何收敛特性和空气动力收敛特性,随着拟合阶次的增加,拟合翼型的几何坐标和气动性能结果向原翼型逐渐逼近,其11阶拟合翼型的气动特性能够很好的吻合原翼型。在相同工况下11阶拟合翼型升力特性、阻力特性结果与该翼型试验数据的误差很小,可以利用11阶拟合翼型代替原翼型进行风力机的设计和分析,并总结不同翼型参数化集成表达的最低拟合阶数。
Based on the Joukowski conformal transformation theory and Theodorsen method,a novel parametric representation function（shape function） for wind turbine airfoils is developed.The airfoil design space and shape control equations are studied.Results of the analyses of FX66-S196-V1 airfoil are shown to illustrate the evaluation processes and to demonstrate the rate of convergence of the geometric and aerodynamic characteristics.The geometric coordinates and aerodynamic performance of approximate airfoils gradually approach the baseline airfoil along with the increase of polynomial orders.The surface pressure distribution of 11-order airfoil is in good agreement with the original airfoil.The differences of lift and drag performance between 11-order airfoil and experimental data of actual airfoil are very small.11-order airfoil can be used to substitute for the actual airfoil in wind turbine design.The lowest orders of different airfoils parametric representation are presented.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2010年第10期132-138,共7页
Journal of Mechanical Engineering
基金
国家自然科学基金(50775227)
重庆市自然科学基金(CSTC
2008BC3029)资助项目
关键词
风力机
翼型型线
参数化表达
收敛特性
压力分布
Wind turbine Airfoil profile Parametric representation Convergence property Pressure distribution
