网格变形在俯仰振荡翼型中的应用

为解决航空器结构变形问题，在研究相关非定常流场基础上，建立了包含结构变形的非定常流场数值求解方法，运用无限插值法（TFI）生成任意时刻的非定常动态网格，通过与刚性动网格比较，证明了方法的可行性，并以NACA0012翼型为算例，对翼型俯仰振荡运动中表面柔性变形问题进行了数值模拟，发现俯仰振荡中叠加变形形式为一阶振型时，可以明显地提高升力、增加动稳定、提高升阻比。

A CFD Method of Containing Structure Deformation

Based on unsteady Navier-Stokes equations, a CFD method containing structure mesh deforma- tion was researched using TFI for displacements. An oscillatory airfoil was calculated using rigid and de- forming dynamic grid. By comparing with experimental data, the deformation method behaves as well as the rigid method. Then the paper presents a preliminary study of an oscillatory morphing problem using NACAO012 airfoil. The results demonstrate that：lift, dynamic stability and lift- to- drag ratio are increased when the first- order vibration mode was superimposed.