为了研究抗高过载装药结构下采用爆轰点火时火药颗粒的运动和燃烧情况,以及此种装药结构下的点传火特性,在试验研究的基础上,建立了抗高过载装药爆轰点火过程的轴对称二维两相流计算模型.通过编程计算求解了高装填密度下,点火过程中药床内各物性参数的变化情况,依据计算结果列出了部分典型时刻的压力分布图和固相空隙率分布图.通过对点火过程点传火特性的分析表明,文中给出的3层装药结构在爆轰点火时具有良好的传火特性.%In order to study the moving and combustion conditions of powder, and the firing and flame propagation characteristics of the charge structure which has overload protection with ignition by detonation , an axial symmetry two dimension-two phase flow model of the layered charge structure using the ignition by detonation was set up based on the experimental study. The main parameters of ignition process were calculated using programming language, and some typical computed results were listed, such as pressure distribution pattern and solid phase void ratio distribution pattern. From the analysis of firing and flame propagation characteristics of the ignition process, it is concluded that the layered charge structure has nicer flame propagation characteristic.
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