外挂物干扰流场特性数值仿真研究

飞行器研制中对于带外挂物的复杂外形气动特性分析研究一直是个难点,对外挂物与挂架不同缝隙的复杂机翼-挂架-外挂物组合外形采用结构重叠网格数值方法,快捷高质地完成了网格生成,通过求解带有k-e湍流模型的Navier-Stokes方程组,得到多个计算工况下的绕流外流场,分析了外挂物在不同工况下的气动特性,结果表明,CFD数值方法可方便快捷地对复杂干扰流场进行数值计算,可为飞行器相关设计提供技术支持。

Numerical Simulation and Research on Aerodynamic Characteristics of Interacting Flow Field past External Store

It is always a barrier to analyze aerodynamic characteristic of complicated shape with stores in aircraft developing.In this paper,the complicated geometry shape of wing-pylon-store of different gap of store and pylon,overlapping structured grid is used which can work well in such case.Thorough solving Navier-Stokes equations team with k-e turbulent model,the outer flow field around the store is reached.The aerodynamic characteristic is analyzed in some conditions,and the results display that with the numerical method,complicated interacting flow field can be numerically simulated expediently and efficiently,which can give some technical contribution to design of aircraft.