基于Fluent的风力机叶片翼型气动性能数值计算

Numerical simulation of aerodynamic performance of wind turbine blade airfoil with Fluent

风力发电是新能源利用的重要方式,风力发电机叶片翼型的气动参数特性分析对叶片翼型设计具有重要意义。采用数值方法研究不同攻角时NACA4415翼型的气动特性。利用ICEM对NACA4415翼型进行结构化网格划分,建立S-A湍流模型进行数值计算。结果表明在6°攻角时翼型存在最大升阻比,此时翼型的气动性能最佳,对风能利用率最高;14°攻角时翼型开始出现失速,翼型后部出现的气流分离是造成失速的主要原因。

Wind power generation is an important way to utilize new energy.The analysis of aerodynamic parameters of wind turbine blade airfoil is of great significance to blade airfoil design.Numerical methods were used to study the aerodynamic characteristics of NACA4415 airfoil at different angles of attack.NACA4415 airfoil is structured by ICEM and the S-A turbulence model is established for numerical calculation.The results show that the airfoil has the maximum lift-to-drag ratio at 6°angle of attack.At this time,the airfoil has the best aerodynamic performance and the highest wind energy utilization.At 14°angle of attack,the airfoil begins to stall and the rear of the airfoil appears.Air separation is the main cause of stall.