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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。计算结果与实验模型的机翼表面压力分布（测量值）符合良好
The method of solving elliptic and parabolic partial differential equations and the multi-grid technique are used to generate the body of the wing / fuselage / nacelle / pylon complex assembly and the calculation grid orthogonal to the boundary. The finite volume method is used to solve the Euler equation and simulate the transonic flow around the advanced twin-engine civil aircraft. The viscous effect of the wing boundary layer is taken into account to obtain the aerodynamic characteristics of the wing-body combination with the nacelles and the hanger interference. The calculation shows that the nacelle and pylon have a significant influence on the aerodynamic characteristics of the supercritical wing. The calculated results are in good agreement with the experimental airfoil surface pressure distribution (measured value)