摘要
该文基于独立膨胀原理研究了潜射航行体的自然空泡形态及小机动条件下空泡轴线的偏移,采用细长体理论计算了航行体部分沾湿区的流体动力,建立了纵平面内潜射航行体水下运动数学模型。针对自然空化条件下潜射航行体水下航行段弹道进行了仿真分析,仿真结果表明,艇速干扰使弹道出现弯曲,艇速越大,航行体出水姿态角越大,不利于出水姿态的稳定,而空化作用产生的附加径向力在一定程度上对航行体姿态起到矫正作用,仿真计算结果与模型试验结果符合较好。
The natural cavity around a submarine-launched vehicle and the deviation of its axis under maneuver conditions were investigated based on the principle of cavity expansion independence. The theory of slender bodies was used to calculate the hydrodynamic force on partially wetted regions. Then a mathematical model for the underwater motion of a submarine-launched vehicle was developed for the longitudinal plane. The underwater motion under cavitation conditions was analyzed by numerical simulation. The numerical results show a good agreement with experimental results. The results show that submarine speed will induce trajectory divergence, which is disadvantageous to attitude stability. However, the additional radial force due to cavitation can correct the attitude to a certain degree.
出处
《工程力学》
EI
CSCD
北大核心
2014年第10期242-247,共6页
Engineering Mechanics
基金
国家自然科学基金项目(51149003)
中央高校基本科研业务费专项资金项目(HIT.NSRIF.2013033)
关键词
潜射
水下弹道
空化
附加径向力
仿真
submarine-launched
underwater trajectory
cavitation
additional radial force
simulation
