A new airfoil design method for wind turbine to improve maximum lift of airfoil

Abstract

A new wind turbine airfoil design method is established. This method generates an airfoil by fusing different airfoils. The airfoil designed by this method could restrict the airflow separation near the trailing edge of airfoil at high angle of attack, meanwhile the turbulence also is restricted. As a result, the maximum lift force is increased about 16.4% at high angle of attack. Meanwhile, the drag force is decreased about 31.3%. By analyzing the influence of scale factor and rotation angle on the airfoil aerodynamic force characteristics, the simulated results indicate that the larger scale factor and rotation angle could increase the lift stall angle and the maximum lift force. Therefore, this method could be used for designing wind turbine airfoil with high maximum lift force characteristics.

Optimal airfoil selection for small horizontal axis wind turbine blades: A multi-criteria approach

“…For small scale wind turbine, researchers have primarily focused on developing new airfoil (Noronha & Krishna, 2021;Osei et al, 2020;Wang & Li, 2021), selecting an appropriate airfoil from the developed airfoil such as NACA and NREL series (Islam et al, 2019) to enhance the efficiency of wind turbines. For instance, Islam et al (Islam et al, 2019) presented a comparison study of different airfoils from the NACA and NREL airfoil families, aiming on suitability for small horizontal wind turbines, and finally showed that NACA airfoils have better average performance criteria whereas NREL airfoils have better stability criteria.…”