表面微沟槽对风力机翼型气动性能的影响研究  

Influence of Surface Riblets on the Aerodynamic Performance of Wind Turbine Airfoils

作　　者：牛志罡 罗大海 王子尧 NIU Zhigang;LUO Dahai;WANG Ziyao(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer of Power Engineering,Shanghai 200093,China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海市动力工程多相流动与传热重点实验室,上海200093

出　　处：《动力工程学报》2022年第12期1246-1254,共9页Journal of Chinese Society of Power Engineering

基　　金：上海理工大学学位点引导布局与建设培育资助项目(XWDA2021104)。

摘　　要：采用数值模拟方法对表面纵向布置微沟槽的风力机翼型的气动性能进行研究。基于Transition SST模型,采用商用计算流体动力学(CFD)软件,研究了L型和V型2种不同类型的微沟槽的减阻效应,考虑了不同雷诺数和不同翼型条件下,表面微沟槽对风力机翼型升阻力特性的影响。通过对比升、阻力系数及表面摩擦力系数,探讨了风力机翼型表面微沟槽的减阻机理。结果表明:在最优的沟槽几何参数条件下,L型沟槽相比V型沟槽具有更好的减阻效果,DU翼型最大减阻率达到5.6%;采用最优沟槽几何参数时,微沟槽在较大的雷诺数和攻角范围内都具有减阻效果。The aerodynamic performance of several wind turbine airfoils with longitudinally arranged surface riblets was studied by numerical simulation method.Based on the transition SST model and using commercial computational fluid dynamics(CFD)software,the drag reduction effects of two different types of L-shaped and V-shaped riblets were studied.The effect of riblets on the lift and drag characteristics of wind turbine airfoils was also studied,considering the variation of Reynolds number and airfoil geometry.By comparing the lift and drag coefficients,together with the surface friction coefficient,the drag reduction mechanism of surface riblets for wind turbine airfoils was discussed.Results show that under the condition of optimal riblet geometric parameters,L-shaped riblets have better drag reduction effect than V-shaped riblets,and the maximum drag reduction rate for the DU airfoil reaches up to 5.6%.Using the optimal geometric parameters,surface riblets have drag reduction effects in a wide range of Reynolds number and angle of attack.

关 键 词：风力机翼型 数值模拟 微沟槽 减阻 气动性能 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]