基于动网格的NACA0012翼型动态失速仿真计算

针对翼型动态失速问题,利用动网格技术的数值计算方法,采用转捩修正的SST k-ω湍流模型对NACA0012翼型进行仿真模拟及数值计算,得到翼型升阻力系数随迎角的变化规律以及翼型表面的压力和速度云图。研究表明,动网格技术和所选湍流模型能较好地捕捉翼型动态失速过程中涡流的形成、发展、脱落和再附着的过程,对翼型动态失速的研究提供一定的参考作用,也为民航训练动态失速项目的研究奠定基础。

Dynamic Stall Simulation of NACA0012 Airfoil Based on Dynamic Grid

In order to study the dynamic stall of airfoil, a numerical method based on dynamic mesh technology is used to simulate and calculate NACA0012 airfoil by using the transition modified SST k-ω turbulence model. The variation of lift-drag coefficient with angle of attack and the nephograms of pressure and velocity was obtained by the above methods. The dynamic mesh technique and the turbulence model can well obtain reasonable and accurate parameters of emergence, development, shedding and reattachment of the vortex during the dynamic stall of the airfoil by simulation, which can also provide some reference for the study of dynamic stall and also lay the foundation for the dynamic stall research of civil aviation training aircraft.