基于N-S方程的地面效应模拟  

The simulation of ground-effect based on N-S equations

作　　者：王刚[1] 叶正寅[1] 陈迎春 

机构地区：[1]西北工业大学飞机系,陕西西安710072 [2]西安飞机设计研究所总师办,陕西西安710089

出　　处：《飞行力学》2001年第1期38-41,共4页Flight Dynamics

基　　金：国家自然基金资助项目!( 1 9972 0 57)

摘　　要：模拟了低速情况下二维翼型的地面效应问题 ,其中翼面流动利用一种改进的、基于不可压 N-S方程的离散涡方法来模拟 ,地面模拟则利用一系列连续分布的涡板块来实现。利用上述模型研究了地面对翼型表面流动和压力分布的影响 ,并对有地面存在条件下的尾涡发展规律进行了讨论。计算结果表明 ,该方法能够有效地模拟低速情况下翼型的近地面流动 ,具有一定的工程应用价值。In this paper we simulate the two dimensional, incompressible flow around an airfoil in ground effect. The flowfield around airfoil is simulated by a modified discrete vortex method, which is based on incompressible N S equations. The simulation of ground is realized by a number of continuous vorticity panels. With the application of the above models, we research the influence of ground effect on the flow near the surface of airfoil, the pressure distribution, and the moving of the vortices in the wake. Our result indicates that the present method can simulate the flow of airfoil near the ground effectively and quickly, and it is worthy of being used in engineering.

关 键 词：地面效应 离散涡 翼型 数值计算 N-S方程 模拟 飞行力学 

分 类 号：V212.131[航空宇航科学与技术—航空宇航推进理论与工程] V211.24