Research on Aerodynamic Performance of J-type Blade Vertical Axis Wind Turbine

In this paper, the aerodynamics performance of six kinds of VAWT with different blade pairs is studied. This paper presents a J-type blade and studies the torque and wind energy capture rate at a different distance from the leading edge. The torque coefficient and wind energy capture rate of the J-type blade are optimized. A three-dimensional model of a vertical axis turbine is established. The dynamic properties of different blades are analyzed by two-dimensional steady flow dynamics (CFD) model. According to the dynamic analysis of the J-type blade, an improved J-type blade is proposed. After analyzing the changes in wind energy capture rate (CP) and torque of the improved J-type blade, the results show that compared with NACA0020, both the torque and the wind energy capture rate of J-type blade are reduced. The wind energy capture rate (CP) decrease when the tip speed ratio (TSR) is greater than 2. The larger torque and wind energy capture rate be obtained when the tip speed ratio (TSR) is less than 2.