摘要
基于带化学反应的二维Euler方程,采用氢气/空气的9组分19步基元反应简化模型,对充有当量比的氢气/空气预混气体的矩形爆轰流场中爆轰波的传播过程进行了数值模拟,讨论了均匀来流对爆轰波传播的影响。数值结果表明,在均匀来流的影响下,上游方向上的燃烧强度大于C-J爆速,下游方向上的燃烧强度小于C-J爆速;上游方向传播的爆轰波的阵面压力大于下游方向传播的爆轰波的阵面压力。所以,经典的C-J爆轰理论并不适用于流动系统中爆轰波传播特性的研究。
The rectangular detonation flow field filled with hydrogen-air is simulated numerically based on multicomponent two-dimensional Euler equation,and effects of uniform incoming flow on detonation wave propagation were discussed.From the numerical results,depending on the flow velocity,the apparent propagation velocity of a detonation wave is higher in the upstream direction and lower in the down stream direction than vC-J.The pressure of the upstream moving detonation is higher than that of the downstream moving detonation.As a result,investigation of detonation wave propagation in a flow system by classical C-J detonation theory is unsuitable.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2010年第6期593-597,共5页
Explosion and Shock Waves
基金
国家自然科学基金项目(10872096)~~
关键词
爆炸力学
爆轰波
C-J爆轰理论
流动系统
mechanics of explosion
detonation wave
C-J detonation theory
flow system
