对风力机轻风启动,有效利用风能进行研究.利用仿生耦合技术通过对鸽子翼型数据提取,建立仿生模型.基于NACA0015翼型及鸽子数据特征,将优缘凸起、后缘凸起及前后缘凸起三类翼型与NACA0015翼型进行对比,分析得到翼型上下表面压力分布、表面流场变化、剪切应力分布及增升减阻各气动系数,当失速攻角为16°、马赫数为0.073条件下,仿生翼型在提高升力方面比NACA0015提高了31.98%、降低阻力达到了10.62%,仿生翼型对表面流体起到了有效改善,改变结构的翼型对提高升力,降低阻力有了很大的提高.%Research on the effective use of wind energy for wind turbine starting,the use of bionic coupling technology through the dove airfoil data extraction,the establishment of bionic model.Based on the characteristics of NACA0015 airfoil and dove data,the optimization of leading-edge,trailing edge convex,front and rear convex of three types of airfoils and NACA0015 airfoil are compared and analyzed,the pressure distribution,the variation of surface flow field, the distribution of shear stress and the aerodynamic coefficients of lift and drag reduction are obtained.When the stall an-gle is 16 and the Mach number is 0.073,the bionic airfoil improves lift by 31.98% compared with NACA0015,and reduces the drag by 10.62%.The bionic airfoil plays an important role in improving the surface fluid and improving the lift and reducing the drag by changing the airfoil.
展开▼
