本文从非定常形式的N-S方程出发,采用有限差分法数值模拟了入射涡对与圆柱及翼型相互作用的流场结构,旨在分析讨论其复杂的非定常流动现象,如二次涡及三次涡的形成、多涡配对、非定常分离及剪切层的演化等,以及不同的物形及涡对与物体间不同的相对位置对流场结构的影响。此外,文中还通过分析物面压力分布随时间的变化来探讨非定常分离的流动特性。 Based on the unsteady Navier-Stokes equations, the finite difference method is used to numerically simulate the flow field of the incident vortex pairs interacting with the cylinder and the airfoil. The purpose of this paper is to analyze and discuss the complicated unsteady flow phenomena, such as the secondary vortex and the third Vortex formation, vortex pairing, unsteady separation and shear layer evolution, as well as the influence of different physical shapes and vortex pairs on the relative position of the object to the flow field structure. In addition, the paper also discusses the flow characteristics of unsteady separation by analyzing the change of surface pressure distribution with time.