关键词: 脉冲压缩;固体推进剂;冲击波引爆;爆轰;数值分析

Abstract: A numerical study on dynamic compaction of porous propellant bedsunder confinement is presented in this paper. The two-phase continuum mixturenonequilibruim theory is applied to describe dynamic compaction processes. Thegoverning equations are solved by MacCormack finite difference method. As an example, HMX porous bed is studied for various piston-impact conditions and compared to experimental data and steady-state wave analysis. The model predicts reasonably well the observed steady compaction wave characteristics. This study can beapplied to investigate the machanisms of Shock to Detonation Transition and Deflagration to Detonation Transition for high energy solid propellants.

Key words: Pulse compression;Solid propellant;Shock wave initiation;Detonation;Numerial analysis