该文根据开槽管状药的装药结构特点,建立两相流内弹道理论模型.在定义了开槽管状药的肉厚与槽宽的基础上,推导出形状函数,采用差分方法求解.计算结果表明,开槽管状药透气性好,点传火容易,压力波振幅小,计算结果符合膛内射击过程的变化规律. According to the characteristics of the drug loading structure of slotted tubular drug, a two-phase flow trajectory model is established.On the basis of defining the flesh thickness and groove width of slotted tubular drug, the shape function is derived and solved by the difference method. The results show that the slotted tubular drug has good gas permeability, easy fire transmission and small amplitude of pressure wave, and the calculated result accords with the changing rule of shooting in the bore.