旋转导弹横向喷流/超声速来流干扰数值模拟  

Numerical Simulation of Interaction Between Supersonic Incoming Flow and Lateral Jets From Rotating Missile

作　　者：王树军[1] 胡俊[1] 吴甲生[1] 符蓓蓓[1] 

机构地区：[1]北京理工大学宇航科学技术学院,北京100081

出　　处：《兵工学报》2008年第10期1220-1226,共7页Acta Armamentarii

摘　　要：以旋转坐标系下Navier-Stokes方程为控制方程,用有限体积法、对称TVD格式和重叠网格技术对带有单股和两股横向喷流旋转导弹的喷流干扰流场进行了数值模拟,计算了喷流与来流、喷流与喷流之间的干扰情况。结果表明:两股喷流增强了与来流之间的干扰,喷流与喷流间也存在干扰;两种干扰影响使力放大因子较单股喷流高;旋转使喷口前的分离区形状改变;在背风面喷流时,旋转使喷流羽流发生周向偏转,影响喷流干扰力放大因子。Based on Navier-Stokes equations in rotating frame of reference, the interaction flow field over spinning body with one and two lateral jets was simulated by finite volume methods, symmetric TVD schemes and overlapping grid. Interference between jets and incoming flow, jets and jets, was computed. The simulated results show that two jets reinforce the interaction between jet and incoming flow and interference exists also between two jets; the force amplification factor under the influence of two kinds of interaction is greater than that of one jet to some extent, the form of separation zone ahead of the jets is changed under the influence of rotation, at positive attack angle, rotation causes circumferential deflection of the jet plume, influences the force amplification factor.

关 键 词：流体力学 横向喷流 喷流间干扰 重叠网格 对称TVD格式 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]