采用新颖翼型的H型风轮气动特性试验研究

In order to improve self-starting capability of H-type wind turbines, a novel airfoil just containing leading edge and one airfoil surface was designed exploratively, and wind tunnel experiments on the wind turbine rotor with this airfoil were carried out to investigate the start-up behavior and power output characteristics at different wind speeds. Effects of Reynolds number and solidity on aerodynamic characteristics of the turbine rotor were clarified. The experimental results indicate the turbine rotor adopting the novel airfoil is capable of self-start at low wind speeds, exhibiting an excellent self-start behavior, especially for the turbine rotor with large solidity. In addition, the turbine rotor with large solidity is mainly driven by the drag and essentially belongs to drag-type wind turbine, but it is subject to a relatively high power coefficient. Considering the self-start behavior and power output characteristics, the proposed airfoil is more suitable for the H-type wind turbine at large solidity.