基于结构重叠网格技术,采用有限体积方法求解带有k-ε湍流模型的Navier-Stokes方程组,对不同挂位(弦向、展向及垂向)外挂物绕流流场进行数值模拟,通过对结果分析发现:不同挂位的外挂物气动特性各有特点,如,沿不同弦向同一攻角下侧向力相差不大,而法向力却差异明显;展向位置对侧向力影响较大,沿翼展向向外侧向力增大;沿垂向远离载机使得干扰变弱,各气动参数变小。

Based on structured overlapping grids, Navier-Stokes equation teams with ke turbulent model solved with finite volume method were applied to numerically simulate flow field past external store on different suspension (chordwise, spanwise, vertical). Through analyzing the results, the conclusion could be reached: different suspension has different aerodynamic characteristic, for example, along the chaordwise direction with the same attack angle, the side forces appeare nearly the same, while the normal forces are obviously different; Along the spanwise direction, side forces are so different and more outer along spanwise, more larger of the forces; along the vertical direction, the interference between the wing and store is weak, and thus all the aerodynamic parameters become smaller.