摘要
射弹在水下带空泡高速运动,实验研究存在诸多限制。因此应用两种方法对水下高速射弹的空泡形态及阻力系数进行了对比研究:一是应用CFD仿真软件进行仿真研究;二是应用基于空泡截面独立扩张原理建立的公式进行理论分析。研究表明:仿真计算结果与公式计算结果吻合很好。在小空化数下,空泡前部形状基本不变,随着空化数的减小,空泡的相对长度、相对直径和长细比都在增大。研究结果可为射弹的设计提供有益的参考。
The underwater high-speed projectile navigates with cavity,which is hard to research through experiment.Other two different measures are applied to research the characteristics of cavity form and the drag force,one is the simulation software CFD,the other is the formula established on the Principle of Independence of Cavity Sections Expansion.The research shows that the results of numerical simulation agree very well with the results of formula computing.While the cavitation number is small,the front form of cavity varies little.As the cavitation number reduces,the relative length and relative diameter of cavity increase,so does the radio of them.The conclusion of the research could be used as a reference of the projectile profile design.
出处
《指挥控制与仿真》
2011年第6期116-118,共3页
Command Control & Simulation
关键词
水下射弹
空泡
数值仿真
underwater projectil
cavity
CFD simulation
