Research on Effect of Airfoil Thickness and Wind Speed on the Aerodynamic Performance of Vertical Axis Wind Turbines
In order to investigate the effects of airfoil thickness and wind speed on the aerodynamic performance of vertical axis wind turbines(V AWTs),three VAWTs including NACA2412,NACA2415 and NACA2418 blades with different thickness air-foils were selected to simulate the aerodynamic performance of VAWT at different wind speeds based on the sliding mesh method and the shear stress transport(SST)k-ω turbulence model.The effect of airfoil thickness on the aerodynamic performance of VAWT at different wind speeds was analyzed by comparing the power coefficient CP,moment coefficient CM and average power P.The results show that the power and torque coefficients of the turbines increase significantly when the airfoil thickness increase at low tip speed ratios,meanwhile,the range of tip speed ratio for efficient operation increases also.In addition,the peak efficiency factor of the turbine increases and the tip speed ratios corresponding to the peak efficiency factor reduces as the airfoil thickness in-creases.Wind speed has a significant impact on the output power of VAWTs.The results of the study can provide a reference for the structural design and optimization of VAWTs.
万方数据
维普
