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为了研究襟翼结构对风力机翼型气动性能的影响,选用NACA0012翼型,建立了翼型加装襟翼的二维计算模型,使用计算流体力学软件Fluent求解定常、不可压缩雷诺平均的N-S方程和Spalart-Allmaras单方程湍流模型,分析了典型的NACA0012翼型添加不同几何形状襟翼在0°~18°攻角α范围内的气动特性。通过计算表明:在风力机翼型上添加不同结构襟翼,能够提高翼型的有效升力系数,添加同样高度和厚度的三角形襟翼比添加矩形襟翼时的升力系数要大,而阻力变化甚小;因此,选择适当的几何形状襟翼不仅能起到增升效果且能相应的节省材料从而改善其经济性。
In order to study the influence of flap structure on the aerodynamic performance of wind turbine airfoils, a two-dimensional model of aerofoil-fitted flaps was established by using NACA0012 airfoil. The computational fluid dynamics software Fluent was used to solve the steady and incompressible Reynolds averaged Navier-Stokes equations And Spalart-Allmaras single-equation turbulence model, the aerodynamic characteristics of a typical NACA0012 airfoil with different geometrical flaps at an angle of attack 0 ° ~ 18 ° were analyzed. The calculation shows that adding different structure flaps on the airfoil can increase the effective lift coefficient of the airfoil. The triangular flaps with the same height and thickness are larger than those with rectangular flaps, while the resistance changes greatly Small; therefore, the choice of the appropriate geometry of the flaps can not only play a lifting effect and the corresponding material can be saved to improve its economy.