细长翼绕流中的旋涡特性

THE AERODYNAMIC BEHAVIOURS Or VORTICES FOR SLENDER-WING

本文综述了细长翼绕流中由前缘分离形成的集中涡的各种运动特性。细长翼翼面上方的前缘集中涡是控制机翼绕流和影响机翼气动力特性的主要因素。为此本文详细介绍了前缘涡的形成及其基本流动结构;前缘涡的破裂现象及其对机翼气动力特性的影响;并给出前缘涡破裂的各种理论模型和它的估算方法。最后还简单介绍了绕流中旋涡之间的绕合现象和互相干扰的流动结构。

This paper reviews the aerodynamic bebaviours of leading edge vortices on the slender-wings.The leading edge vortices are important factor to control the flow field around the slender-wing and to influence the aerodynamic characteristics of the wing.Therefore, the following problems concerning the dynamics of cortices are discussed ia details: the formation of leading edge vortex and its main flow structure; the phenomenon of the leading edge vortex breakdown and its effects on the aerodynamic characteristics of the wings; the theoretical models to depict the vortex breakdown and methods for predicting the leading edge vortex breakdown. Finally a brief review on the interactions of vortices in the flow field of the slender-wings is presented.