YD-大厚度风力机翼型粗糙敏感度试验研究

EXPERIMENTAL STUDY ON ROUGHNESS SENSITIVITY OF YD-THICK WIND TURBINE AIRFOILS

基于YD-系列3个大厚度钝后缘风力机翼型(相对厚度35%、40%和60%),在西北工业大学NF-3低速翼型风洞开展粗糙敏感度对翼型性能影响的试验研究。结果表明,前缘粗糙对大厚度翼型的性能影响很大,造成升力线斜率和最大升力系数急剧减小,吸力面后缘流动的提前分离。

In this paper,the effect of roughness sensitivity on the performance of the thick wind turbine airfoils was studied in NF-3 low speed airfoil wind tunnel of Northwestern Polytechnical University,based on three YD-blunt trailing edge wind turbine airfoils(35%,40% and 60% relative thickness).The results show that the leading edge roughness has a great influence on the performance of thick airfoils,resulting in a sharp decrease in the lift coefficient slope and the maximum lift coefficient,and the early separation of the flow at the trailing edge of the suction surface.