爆炸与冲击2011，Vol.31Issue(4)：407-412,6.
激波绕射碰撞加速诱导爆轰的数值模拟
Numerical investigations on detonation initiation accelerated by collision of diffracted shock waves
孙晓晖 1陈志华 1张焕好1
作者信息
- 1. 南京理工大学瞬态物理重点实验室,江苏南京210094
- 折叠
摘要
Abstract
Based on the one-step chemical reaction Euler equations, the high resolution hybrid Roe/ HLL scheme and the adaptive mesh refinement (AMR) method were employed to numerically investigate the process of detonation induced by the collision of the diffracted shock waves inside a square tube with a cube mounted at the axis. And the effects of the tube blockage ratios were discussed on the detonation formation. Numerical results show that when the weak shock waves pass around the square obstruct, both the up and down weak shock wave diffractions occur, and they collide with each other behind the obstruct after a period of expansion, a high pressure and temperature point can be generated during the collision, which can ignite the combustible gases and accelerate the formation of detonation. However, with a large blockage ratio, as the shock wave is too weak during the collision, the detonation cannot be initiated.关键词
爆炸力学/碰撞/障碍物/激波/爆轰/燃烧Key words
mechanics of explosion/ collision/ obstruct/ shock wave/ detonation/ combustion分类
数理科学引用本文复制引用
孙晓晖,陈志华,张焕好..激波绕射碰撞加速诱导爆轰的数值模拟[J].爆炸与冲击,2011,31(4):407-412,6.
