摘要
在实验基础上建立起描述多孔固体推进剂中燃烧转爆轰过程的一维反应两相流模型。用MaoCorcmak有限差分格式和自适应网格技术数值求解了控制方程。数值结果表明,在燃烧转爆轰的各个阶段,颗粒床都存在不同程度的动态压缩,压缩波和燃烧波的相互作用是燃烧向爆轰转变的内在原因。数值预测与实验结果进行了比较,两者有相当的一致性。
one-dimensional two-phase reactive flow model is established based on experiment to describe deflagration-to-detonation transition (DDT) in porous solid propellants. The governing equations have been numerically solved using MacCormack finite difference scheme and self-adaptive-grid technique. The numerical results show that dynamic compaction of the porous bed occures during each stage of the DDT processed and the transition from de fi agrat ion-to-detonation is mixture results of compressive wave and combustion wave. The numerical predictions agree well with the experimental results.
出处
《推进技术》
EI
CAS
CSCD
北大核心
1994年第6期74-82,共9页
Journal of Propulsion Technology
基金
国家自然科学基金
关键词
固体推进剂
推进剂燃烧
爆轰试验
数值模拟
Solid propellant, Propellant combustion, Detonation test, Numericalsimulation