摘要
采用求解椭圆型和抛物型偏微分方程的方法及多块网格技术，生成机翼／机身／短舱／挂架复杂组合体外形的贴体及与边界正交的计算网格。应用有限体积法高效求解欧拉方程，模拟先进双发民用飞机的跨音速绕流，并计入机翼边界层的粘性效应，获得存在短舱、挂架干扰的翼身组合体气动特性。计算表明，短舱、挂架对超临界机翼的气动特性有显著的影响。
A body fitted orthogonal grid around complex configurations including wing, body, pylon and nacelle has been successfully generated by applying the multi block grid technique and the method of solving elliptic and parabolic partial differential equations. The transonic flowfield and aerodynamic characteristics of the advanced twin engine transport aircraft are also simulated numerically by using finite volume methods to solve the Euler equations with high efficiency, and the viscous effect of wing boundary layer is considered. Results of the calculation show that pylon and nacelle have significant effect on the supercritical wing aerodynamic characteristics. the numerical results are in good agreement with the experimental wing surface pressure distribution data.
出处
《计算物理》
CSCD
北大核心
1997年第4期493-495,共3页
Chinese Journal of Computational Physics
基金
航空科学基金
关键词
翼身组合体
短舱
挂架
干扰
网格生成
跨音速流
wing/body/pylon/nacelle interference
grid generation
transonic flow.
