【摘要】 火炮膛内两相流动过程可划分为两个阶段,即固定床阶段和流化床阶段。本文根据固定床阶段的特点,建立了内弹道膛内起始阶段点火气流对火药床压缩的多孔介质“力学”模型和点火气流点燃火药床的多孔介质“热学”模型。模型的数值计算结果与实验结果有一定的一致性。更多还原

【Abstract】 The process of the two-phase flow in guns may be derided into two stages, that is, the static bed stage and the fluidized bed stage. According to the characteristics of the static bed stage, this paper aims to establish a porous medium mechanic-dynamic model for the ignition gas flow compressing the charge bed and a porous medium thermo-dynamic model for the ignition gas flow igniting the charge bed. Results of calculation following these are in agreement with the experimental findings to a certain extent.更多还原