风力机二维翼型Gurney襟翼增升的数值模拟

Numerical simulation on lift enhancement of 2D aerofoil Gurney flaps of wind turbine

采用了以湍流模型为基础的SST(Shear Stress Transport)模型进行数值计算,分析了翼型添加Gurney襟翼时的气动特性。选用了在风力机中应用较多的NACA63-215翼型,通过数值计算表明:在风力机翼型上添加Gurney襟翼,能够提高翼型的有效升力系数,襟翼高度越大,升力系数越大,阻力系数也相应越大。

In order to improve the efficiency of wind turbine system, shorten the research and development cycle of leaf blade, in this paper, SST （Shear Stress Transport）model based on turbulence model is used to analysis the aerodynamic properties when Gurney flaps are added to the airfoil section. The wing section selected is the NACA63-215 aerofoil section which is widely applied in the wind turbine system. The calculation results indicated that the Gurney flaps added to the airfoil section can improve the effective lift coefficient of the aerofoil section, and the higher the flaps, the larger the lift coefficient and the corresoonding friction coefficient.