振荡扰流提高风力机翼型气动性能的研究  

STUDY OF IMPROVING THE AERODYNAMIC PERFORMANCE OF WIND TURBINE BLADE BY OSCILLATING EXCITATION

作　　者：程永卓[1] 李宇红[1] 霍福鹏[1] 陈佐一[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《太阳能学报》2003年第1期94-98,共5页Acta Energiae Solaris Sinica

基　　金：国家 973重点基础研究资助项目 (G19990 2 2 3 0 6)

摘　　要：利用振荡扰流进行了改善风力机翼型大攻角下性能的研究。应用有限体积法 ,数值模拟了头部附加振荡扰流的翼型分离流动 ,并对振荡扰流增升效果的参数影响进行了分析。结果表明在深失速条件下 ,翼型头部附加的振荡扰流在一定的频率和振幅时能够显著改善翼型的气动性能 ,提高翼型的升力。与扰流振幅相比 ,调节扰流振荡频率更能改善翼型深失速条件下的气动性能。Numerical simulation of unsteady stall characteristics of the airfoil was carried out by oscillating excitation for improving aerodynamic performance. Parameters of oscillating excitation as an active separation method are analyzed. Results show that oscillating excitation adding at the surface of the airfoil can improve aerodynamic performance thus increase lift force of airfoil. The frequency of oscillating excitation has more effect on improving aerodynamic performance of airfoil at large attack angle than amplitude of oscillating excitation.

关 键 词：振荡扰流 分离主动控制 数值模拟 大攻角 翼型 

分 类 号：TK122[动力工程及工程热物理—工程热物理]