不同覆冰形态下风力机叶片翼型气动特性分析

Investigation on the aerodynamic characteristic of wind turbine blade airfoils under different ice cover patterns

低温环境下风力机叶片常面临覆冰的危险,研究覆冰对翼型气动特性的影响对覆冰叶片气动特性分析具有重要意义。文章采用基于有限体积法的数值模拟算法对S809二维翼型气动特性及覆冰影响进行了模拟分析。通过对比分析明冰与霜冰两种覆冰形态对翼型气动特性的影响程度,发现霜冰对翼型气动特性影响不大,而明冰则会严重恶化翼型的气动特性,甚至可能导致负阻力。

The blades of wind turbine often face the danger of icing under low temperature environment,making it crucial to study the impact of icing on the aerodynamic characteristics of the wind turbine airfoil.This paper employs a numerical simulation based on the finite volume method to investigate the aerodynamic characteristics of the S809 airfoil and the effect of icing.Specifically,this study analyzes and compares the influence of two types of ice coverings,glaze ice and rime ice,on the aerodynamic characteristics of the airfoil.The finding reveal that the rime icing has negligible influence on the aerodynamic characteristics of the airfoil,whereas the glaze icing will significantly deteriorate the aerodynamic characteristics of the airfoil and may resulting negative drag under certain conditions.