燃烧轻气炮发射过程数值模拟与优化

针对常规火炮理论初速极限较低的问题，基于氢氧燃烧特性建立燃烧轻气炮的内弹道内模型。根据燃烧轻气炮原理得到影响燃烧轻气炮內弹道性能的参数，采用粒子群优化算法对发射装置结构和内弹道参数进行优化，使用Fluent耦合Chemkin的方法进一步验证了内弹道数值仿真优化结果。结果表明：优化后装置的初速略微下降，燃烧室的初始压力和最大膛压大幅度下降，研究结果在燃烧轻气炮初期研究阶段具有较高的参考价值。

Numerical Simulation and Optimization on Launching Process of Combustion Light Gas Gun

In order to solve the problem of low theoretical muzzle velocity limit of conventional guns, the interior ballistic model of combustion light gas gun was established based on the combustion characteristics of hydrogen and oxygen. According to the principle of combustion light gas gun, the parameters affecting the interior ballistic performance of combustion light gas gun were obtained. Particle swarm optimization algorithm was used to optimize the launcher structure and interior ballistic parameters, and the Fluent coupling Chemkin method was used to further verify the optimization results of interior ballistic numerical simulation. The results show that the initial velocity of the optimized device decreases slightly, and the initial pressure and maximum chamber pressure of the combustion chamber decrease significantly, which has a high reference value in the early stage of combustion light gas gun research.