风力机翼型尾迹干扰的PIV研究  

Experimental investigation of airfoil-wake interaction of wind turbines using PIV

作　　者：李茂义[1] 袁巍[1] 李志平[1] 盖峰[1] 陆亚钧[1] 

机构地区：[1]北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室,北京100191

出　　处：《航空动力学报》2011年第2期281-288,共8页Journal of Aerospace Power

基　　金：国家重点基础研究发展规划(2007CB714600)

摘　　要：实验采用粒子图像测速仪PIV(particle image velocimetry)技术对风力机翼型尾迹的气动干扰进行了研究.针对尾迹对翼型前缘、叶背和叶盆的不同激励,对下游翼型的流场结构进行了分析.结果表明:有益的尾迹激励为不明显改变下游翼型主流区的非定常激励;当上、下游翼型处于相同攻角和适当轴向距离时,在翼型前缘的尾迹激励使得翼型的叶背分离得到明显抑制.The airfoil-wake aerodynamic interaction of wind turbines was experime ntally investigated using PIV（particle image velocimetry） technology.It analyzed the flow structure of downstream airfoil when the wake excited the leading edge,suction side and pressure side of airfoil,respectively.The results indicate tha t the helpful wake excitation is unsteady excitation which doesn＇t change main flow of downstream airfoil distinctly.The separation area at the suction side is restrained under the wake excitation at leading edge of airfoil when the upstre am and downstream airfoils have the same incidence angle and appropriate axial-s pacing.

关 键 词：PIV(粒子图像测速仪)技术 风力机翼型 气动干扰 非定常激励 流场结构 

分 类 号：V235[航空宇航科学与技术—航空宇航推进理论与工程]