点火过程和初始条件对燃烧轻气炮内弹道性能的影响

Influences of ignition process and initial conditions on interior ballistic characteristics of combustion light gas gun

采用计算流体力学方法对燃烧轻气炮膛内燃烧过程进行数值模拟,分析不同的点火点数目和点火能量以及初始温度和压力对燃烧轻气炮内弹道特性的影响。结果表明,采用合理的点火点数目、初始温度和压力条件可以有效控制氢气的燃烧过程,减弱燃烧室内的压力波动。模拟结果对燃烧轻气炮膛内燃烧过程控制具有重要参考价值。

The combustion process in the combustion light gas gun chamber was numerically simulated by using the computational fluid dynamics method. And the influences of the different factors on the interior ballistic characteristics of the combustion light gas gun were analyzed and these factors includ- ed ignition point amount, ignition energy, initial temperature and initial pressure. The results show that a reasonable ignition point amount, a reasonable initial temperature and a reasonable initial pres- sure can be adopted to effectively control the hydrogen combustion process and reduce the pressure os- cillation in the combustion chamber. The simulated results can provide an important reference for controlling the combustion process in the combustion light gas gun chamber.