整装式液体随行装药的两相流数值仿真

摘要

Traveling charge can effectively increase the muzzle velocity of a projectile through improvement of the projectile-based pressure due to combustion of traveling liquid propellant. It can be used in existing weapon systems to reinforce power without changes in artillery structure. This paper reports firsthand results about bulk liquid traveling charge. A complete two-phase flow mathematical model of the interior ballistics of traveling charge is developed and numerically calculated adopting the MacCormack scheme. The pressure, gas velocity and particle velocity distribution curves of the traveling charge are obtained and compared with those of conventional structure.p-t curve in the slope bore matches well with the experimental results, indicating that this model can reveal the fundamental laws of two-phase flow in the bore.%随行装药技术通过随行液体药的燃烧提高弹底压力，可以有效地提高弹丸的初速，能够在不改变火炮结构的基础上应用于现有武器系统，增强火炮的威力。本文建立了随行装药的两相流内弹道模型，并采用MacCormack格式进行了数值求解，给出了随行装药的压力分布、气相速度分布和固相速度分布曲线，并与常规的底部装药结构的计算结果进行了对比。得到的坡膛处的p-t曲线和实验结果有较好的一致性，说明随行装药的两相流内弹道模型能够正确揭示膛内气固两相流动的基本规律。