关键词: 火炮 , 内弹道 , 模块装药 , 二维两相流

Abstract: This paper presents an axisymmetric two-dimensional theoretical model for the interior ballistic two-phase flow，based on the characteristics of the modular charge construction. Functions of the axial ullage between coupled modules and the annular ullage around the modules are taken into ac?count. The computed results are consistent with those from experiments at the breech and the mouth chamber. Detailed results of numerical simulation are provided.

Key words: gun , interior ballistics , modular charge , two-dimensional two-phase flow