摘要
结合火炮工程背景，建立高含能稠密颗粒床中非定常三维两相流与点火器中非定常一维两相流的数理模型，并考虑主装药床与点火器的相互耦合作用。采用“分数步法（ＦＳＭ）”数值求解。发现在点传火阶段，膛内存在明显的三维效应，并伴随波动现象，火药颗粒向壁面聚集。
An unsteady three dimensional,two phase flow model for high energy dense particle bed and an unsteady one dimensional two phase flow model for igniter are established,respectively,to analyze the interior ballistics of gun.In models,the coupling effect of the igniter on the main charge bed is considered.A fractional step method(FSM)is used for numerical solution.It is found that in the ignition and flame spreading process,three dimensional effect and wave phenomenon are very clear and the propellant particles collect to the wall of the gun.A part of the computed results is in good agreement with the experimental ones.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
1996年第3期202-210,共9页
Explosion and Shock Waves
基金
国家自然科学基金
关键词
两相流
点火
内弹道
数值模拟
two phase flow,ignition,interior ballistics,numerical simulation
