【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
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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 algorithm, the three-dimensional N-S equation was solved to simulate the supersonic free flow, side jet flow and the main engine wake during the flight. A clear flow field distribution chart is obtained, the influence of the side jet flow on the outer flow field and the wake flowfield is analyzed, and the effect of the jet speed and the side jet flow on the side jet port is compared. The results show that the distribution of side vents is the dominant factor that determines the influence of side jet on the wake field. The influence of side jet on the wake field increases with the increase of missile flight velocity and the decrease of the side jet from the missile tail While the larger the influence of the side jet on the wake field, the greater the deviation of the wake velocity.
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