考虑两相流内弹道的自行火炮发射动力学计算

为了更加准确地计算火炮弹丸的起始扰动，将两相流内弹道应用于发射动力学研究。建立了完整的自行火炮系统发射动力学方程组，包括火炮系统的体动力学方程组、弹丸在膛内运动的动力学方程以及两相流内弹道方程。编制了计算程序，实现了对某自行火炮发射过程的数值模拟，在准确计算内弹道过程的同时，获得了火炮的动力响应、弹丸膛内运动和起始扰动。部分模拟结果与实验实测结果吻合较好。计算表明，采用两相流内弹道模型将提高发射动力学计算精度。

Calculation of launch dynamics with two-phase flow interior ballistic model for self-propelled artillery

This paper focuses on the study of launch dynamics for self-propelled artillery. In order to exactly compute the motion of projectile in gun tube and the initial disturbance, the theory of two-phase flow interior ballistic is applied to the study on launch dynamics. The equations group of launch dynamics for self-propelled artillery is formed, including the body dynamics equation of gun system, the dynamics equations of projectile moving in gun tube and the equations of the two-phase flow interior ballistic. For a self-propelled artillery the computational program is achieved, by which the simulation of launch process is realized. The interior ballistic, motion of projectile in gun tube, dynamic response of the artillery and initial disturbance of projectile are exactly simulated. Some computational results are in good agreement with test results. The simulation results under the classical and two-phase flow interior ballistic models respectively show that the computational accuracy will be improved when the two-phase flow model is used to study launch dynamics. This work provides a necessary base for researching firing dispersion of self-propelled artillery.