大迎角体涡,翼涡干扰的Euler方程数值模拟

本文用Ｅｕｌｅｒ方程的简化区算法计算翼－身组合体绕流。当大迎角时，计算能自动捕捉到大后掠前缘的分离涡，机射的分离涡由强加Ｋｕｔｔａ条件生成，形成体涡与翼涡的相互干拢。本文对加长前机身的ＡＧＡＲＤ－Ｂ翼－射组合体模型，给出机射有分离和无分离时，横流截面的速度矢量分布、法向力和压力中心，分析体涡的影响。

Numerical Simulation of the Interaction for the Wing-and Body-vortices at High Angle of Attack Using Euler Equations

AsiMplifiedoverlappingsubdomain technique is applied in this paper to compute the flow past a wing-body at high angle of at-tack using Euler equations.The computation can capture the wing-vortex separated from the leading edge of a high swept wing,and also generate the body-vortex by forced Kutta condition applied at assumed separation lines.The body-vortex is then interacted with the wing-vortex.The flow computation is performed to the AGARD-Bwing-body model with increas-ed forebody length.The distribution of the computed velocity vector on the cross-flow sections, normal force and pressurecenter are given for the cases with and without the body-vortex.The effects of the body-vortex on the aerodynamic characteristics are analysed.