风电仿生大厚翼型气动控制实验研究

Experimental Study on Wavy Edge Aerodynamic Characteristics of Big Thick of Wind Turbine Airfoil

通过风洞实验对DU40光滑翼型,DU40-11wavy和DU40-25wavy两种仿生风电翼型,在Re=2×10~5时进行流场测试,得到各项气动参数。对典型攻角进行油流显示实验,对翼型周围流场影响进行了对比分析。结果表明:实验结果两种仿生风电翼型在光滑翼型失速后升力提高,同时DU40-11wavy翼型在失速前区,气动力性能相比于光滑翼型降低3%,相比于展示了DU40-25wavy翼型DU40-11wavy翼型的良好性能更良好,流场显示实验表明凹凸前缘对应的凸包截面延缓了流动分离,凹谷截面提前了流动分离。

In this paper, through wind tunnel experiment of DU40 smooth airfoil, DU40-11wavy and DU40-25wavy two kinds of bionic wind airfoil flow field test, aerodynamic parameters in Re = 2×10^5. The typical attack angle of oil flow visualization experiment, flow control characteristics of concave and convex front of big thickness airfoil of wind power. The results showed that： the experimental results of two kinds of bionic wind airfoil in smooth airfoil stall after the lift increase, at the same time DU40-11wavy airfoil at pre stall zone, the aerodynamic performance of airfoil 3% lower compared to the smooth, compared to demonstrate the good performance of DU40-25wavy airfoil DU40-11wavy airfoil, display the flow field experiments show that the convex hull section wavy front corresponding delay flow separation, valley section of early separation.