内弹道循环起始阶段多孔介质模型

POROUS MEDIUM MODELS FOR THE EARLY STAGES IN THE INTERIOR BALLISTIC CYCLE

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.