摘要
针对水下武器气动发射系统,提出了一种高精度内弹道计算方法。该方法将高精度理论推导和计算流体力学滑移技术相耦合,对发射过程中的高压气体域运用四阶Runge-Kutta法进行求解,对水域部分采用滑移网格进行单自由度武器发射仿真,从而实现对内弹道的高精度计算,可弥补理论计算误差偏大和流体仿真成本高的缺陷。对比试验数据可知,通过该方法得到的武器出管速度平均误差为5.6%,发射气瓶截止压力平均误差为4.0%,证明了该方法的准确性。
A high-precision calculation method for internal trajectory was proposed for the pneumatic launch system of underwater weapons.The method combined high-precision theoretical derivation with computational fluid mechanics slip technique and used the fourth-order Runge-Kutta method to solve the high-pressure gas domain during the launch process.The sliding grid was used to simulate the single degree of freedom weapon launch in the water area,so as to realize the high-precision calculation of internal trajectory,which could make up for the defects of large theoretical calculation error and high cost of fluid simulation.Through comparison with the test data,it can be seen that the average error of the discharge velocity of the weapon and the average error of the cutoff pressure of the posterior cavity obtained by this method are 5.6%and 4.0%,which proves the accuracy of this method.
作者
杨春
李开福
陈炜彬
李录甜
李银龙
YANG Chun;LI Kaifu;CHEN Weibin;LI Lutian;LI Yinlong(The 705 Research Institute,China State Shipbuilding Corporation Limited,Kunming 650101,China;Kunming Optics-Mechanics-Electricity Technology Corporation Limited,Kunming 650106,China)
出处
《水下无人系统学报》
2024年第6期1117-1122,共6页
Journal of Unmanned Undersea Systems
关键词
水下武器
计算流体力学
内弹道
气动发射系统
underwater weapon
computational fluid mechanics
internal trajectory
pneumatic launch system
