风力机振荡翼型动态失速特性的CFD研究  

CFD INVESTIGATION ON WIND TURBINE OSCILLATING AIRFOIL DYNAMIC STALL

作　　者：雷延生[1] 周正贵[1] 

机构地区：[1]南京航空航天大学能源与动力学院,南京210016

出　　处：《太阳能学报》2010年第3期367-372,共6页Acta Energiae Solaris Sinica

基　　金：国家重点基础研究发展(973)计划(2007CB210301)

摘　　要：为采用CFD方法研究风力机振荡翼型出现的流动动态失速现象,首先依据实验结果,对比分析了Baldwin-Lomax、Johnson-King、K-ωSST、S-A和K-ω5种紊流模型计算结果,结果表明:K-ωSST模型由于考虑到分离流动的非平衡作用,针对动态失速的计算精度较高。通过对NACA0012翼型振荡运动的流场进行计算,详细分析了振荡运动过程中翼型表面分离涡的形成、放大直至造成翼型失速以及失速区涡结构。In order to research the dynamic stall Phenomenon which happens during oscillating airfoil of wind turbines by CFD method, according to the results of experiment, the paper compared and analyzed the data calculated with Baldwin- Lornax,Johnson-King, K-ω SST,S-A and K-ω turbulence models. The results shown that K-ω SST model has a high accuracy data with no equilibrium effects in separated flow. By calculating the flow of NACA0012 airfoil with oscillating motion, the paper detailed analysed formation of separated votex on the surface of airfoil in oscillating motion. And the separated votex largened until dynamic stall happened. The paper also analyzed vortex structure in stall region.

关 键 词：动态失速 NACA0012翼型 CFD方法 K-ω SST模型 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]