Determination of angle of attack and dynamic stall loop in the complex vortical flow of a vertical axis wind turbine  

作　　者：Wenzhong Shen Tao Xie Lingpeng Ge Jiamin Yin Zhenye Sun 

机构地区：[1]College of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou 225127,China

出　　处：《Theoretical & Applied Mechanics Letters》2025年第1期9-16,共8页力学快报(英文版)

摘　　要：To improve the vertical axis wind turbine(VAWT)design,the angle of attack(AOA)and airfoil data must be treated correctly.The present paper develops a method for determining AOA on a VAWT based on computational fluid dynamics(CFD)analysis.First,a CFD analysis of a two-bladed VAWT equipped with a NACA 0012 airfoil is conducted.The thrust and power coefficients are validated through experiments.Second,the blade force and velocity data at monitoring points are collected.The AOA at different azimuth angles is determined by removing the blade self-induction at the monitoring point.Then,the lift and drag coefficients as a function of AOA are extracted.Results show that this method is independent of the monitoring points selection located at certain distance to the blades and the extracted dynamic stall hysteresis is more precise than the one with the“usual”method without considering the self-induction from bound vortices.

关 键 词：Vertical axis wind turbine Computational fluid dynamics Angle of attack Dynamic stall 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]