火力与指挥控制2012，Vol.37Issue(12)：106-109,114,5.
超空泡射弹动力学建模与仿真
A Dynamic Modeling and Simulation of Supercavitating Projectile
张纪华 1张宇文 1李雨田 1袁绪龙1
作者信息
- 1. 西北工业大学航海学院,西安 710072
- 折叠
摘要
Abstract
A supercavitating flow pattern opened at the end of body will form while a high-speed projectile underwater moving in the forward direction. This supervavity leads to the force acted on the projectile changed and makes the stability of movement different form conventional underwater vehicles. Aimed at the particular motion pattern, the kinetic model in the single plane is built based on the analysis of the interaction between the projectile and the cavity wall. Coupled algorithm is advanced and numerical simulations are carried out with various initial velocities. The impact force is calculated during the tail impacting on the cavity wall. The results show that the horizontal velocity of the flying projectile decreases rapidly in an exponential manner. The attitude angle, the attitude angle velocity and impact force reduce gradually in the fluctuating form. Meanwhile, the vibration extent of the impact force decreases gradually due to the reducing of the cavity dimension. A lower initial velocity will cause the impact force to turn up earlier. The research method and conclusion afford theoretical foundation for further research on structure and trajectory dissemination of the projectile.关键词
超空泡射弹/尾拍力/弹道稳定性/动力学建模/耦合算法Key words
supercavitating projectile/ impact force/ trajectory stability/ dynamic modeling/ coupling algorithm分类
数理科学引用本文复制引用
张纪华,张宇文,李雨田,袁绪龙..超空泡射弹动力学建模与仿真[J].火力与指挥控制,2012,37(12):106-109,114,5.
