燃烧轻气炮氢氧燃烧特性详细反应动力学模拟

应用氢氧燃烧19步详细化学反应机理，建立了某燃烧轻气炮氢氧燃烧单区模型，数值模拟了氢氧混合气体燃烧发射弹丸的过程。模拟结果与文献［1］实验结果基本吻合，较好地模拟了某燃烧轻气炮氢氧燃烧热力学过程。在此基础上，对多种工况参数下的氢氧混合气体燃烧进行了系统仿真计算，分别讨论了初始温度、初始压力、稀释气体成分与比例对燃烧轻气炮氢氧燃烧特性以及内弹道性能的影响，分析了氢氧燃烧过程中各化学组分的变化。研究结果表明，氢氧混合气体初始温度、初始压力和稀释气体成分与比例对燃烧轻气炮内弹道性能有着显著影响。

Simulation of Hydrogen-Oxygen Combustion of Combustion Light Gas Gun Using Detailed Chemical Kinetics Model

The hydrogen-oxygen combustion single-zone model of a combustion light gas gun is given based on the 19-step detailed chemical reaction mechanism of burning hydrogen-oxygen. The combustion process of hydrogen-oxygen mixed gas in projectile is simulated by this model. The numerical simulation results are in good agreement with the test results in Ref.［1］, and reflect the thermodynamic process of hydrogen-oxygen combustion in a combustion light gas gun. On this basis, the combustion processes of hydrogen-oxygen gases with different conditional parameters are also calculated. The influences of initial temperature, initial pressure, diluents composition and its ratio on the interior ballistic performance of combustion light gas gun and the changes of each chemical composition in hydrogen-oxygen combustion process are analyzed. The results show that initial temperature, initial pressure, diluents composition and its ratio significantly affect the interior ballistic performance of combustion light gas gun.