兵工自动化2017，Vol.36Issue(4)：42-44,3.DOI:10.7690/bgzdh.2017.04.012
水下炮弹前激波特性分析
Characteristic Analysis of Shock Wave Before Underwater Gun
摘要
Abstract
To solve the problem of underwater gun that keeping the sea water from flowing back into the barrel, a sealing device is added to enhance the pressure of the shock wave before the projectile, so the shock wave is strong enough to drainage water in short time. Firstly, a mathematical model is built based on the two-phase flow theory, the pressure which is strong enough to prevent the water is calculated by the model; then a two-dimensional model about the projectile moving in the barrel is built, through the CFD dynamic mesh simulation analysis, the changes and development law of the shock wave is obtained and finally the right time open the sealing device is obtained based on varied influence factors. The results shows that when the time ist=3.673 ms and the pressure is 10 MPa is the right time opening the sealing device thus it can make sure the shock wave is strong enough and the muzzle flow field formed by the shock wave and the water has good drainage effect.关键词
激波/计算流体动力学/动网格/两相流/仿真Key words
shock wave/computational fluid dynamics (CFD)/dynamic mesh/two-phase flow/simulation分类
军事科技引用本文复制引用
梅雄三,戴劲松,王茂森..水下炮弹前激波特性分析[J].兵工自动化,2017,36(4):42-44,3.
