侧喷流对导弹尾流场影响的数值研究  

Numerical investigation on the effect of lateral jet to the plume of a missile

作　　者：程钰锋[1] 聂万胜[1] 

机构地区：[1]装备指挥技术学院航天装备系

出　　处：《飞行力学》2011年第3期40-43,共4页Flight Dynamics

摘　　要：基于PISO算法,通过求解三维N-S方程,对导弹飞行过程中超声速自由来流、侧喷流及主发动机尾流进行了一体化仿真研究。得出了清晰的流场分布图,分析了侧喷流对外流场及尾流场的影响,比较了飞行速度与侧喷口位置对侧喷流作用效果的影响。结果显示:侧喷口的分布位置是决定侧喷流对尾流场影响大小的主导因素;侧喷流对尾流场的影响,随导弹飞行速度的增大及侧喷口距导弹尾部距离的减小而增大;侧喷流对尾流场的影响越大,尾流速度的偏差越大。Based on the PISO （pressure implicit with splitting of operators） algorithm, the flow field of the supersonic external flow, the jet interaction flow field and plume of rocket engine were integrated numerical simulated by solving three dimensional Navier-Stokes equation. The interaction between jet and the supersonic external flow and the plume from main engine was numerically investigated. The jet interaction flow structure was clearly provided, the interaction effect of jet to external flow and plume was analyzed, the different effects of the missile velocity and location of jet were compared. The results show that location of jet is the main factor compared with the external velocity, the effect of the jet interaction will increases as the missile velocity increases and as the distances between jet location and afterbody of the missile decreases. The warp of the plume velocity will increases as the interaction effect of jet to plume increases.

关 键 词：一体化仿真 侧喷流 尾流 

分 类 号：TJ760.11[兵器科学与技术—武器系统与运用工程]