中文摘要：

在充满氢气空气混合气体的激波管中,对激波诱导火焰变形失稳的过程进行数值模拟。根据计算结果讨论流场中激波结构与火焰形状的变化情况,同时给出激波诱导火焰燃烧转爆轰的形式和发展过程。结果显示：激波与火焰作用过程中存在λ结构和二次激波诱导区域的形成,入射激波马赫数为2.3时形成爆轰。

英文摘要：

A numerical simulation of the process of shock wave and flame interaction in a shock tube,which is pre-filled with H2-air mixture,is performed.According to the calculated results,the paper shows the shock structure and the flame shape in the flow field,and the process of DDT induced by shock wave and flame interaction.The process of shock-flame interaction contains the generation of λ structure and the region of twice induced by shock wave,if Mach number of the incident shock reached 2.3,a stable detonation will be established.