爆轰快速点火过程的数值仿真与实验研究

Numerical Simulation and Experimental Study of High Speed Ignition by Detonation

为了寻求一种火药装药床的快速点火方式,以满足工程应用对点火时间的需求,设计了爆轰快速点火实验装置并进行了爆轰点火的实验研究。同时结合实验装置的特殊结构,建立了爆轰点火过程的理论计算模型,应用4阶龙格—库塔法编程计算得出一典型装药结构下爆轰点火过程各物理参数的变化规律,主要为点火过程中实验装置内压力变化规律。通过计算结果与实验结果的对比分析,得出爆轰点火可以实现微秒级点火目标的结论,对爆轰快速点火技术在工程上的应用有一定参考价值。

In order to find a high speed ignition mode which can satisfy the demands of ignition delay time in engineering application,a high speed ignition experimental set-up was designed and an experimental study of ignition by detonation was completed.A theoretical calculation model of high speed ignition by detonation was set up based on the special structure of experimental set-up.The main parameters of ignition process in typical charge arrangement were calculated by programming language with Runge-Kutta.By comparing the computed results with the experimental results,it is concluded that the ignition delay time can achieve three hundred microseconds by using the ignition method,and the result approaches to practical condition.This conclusion is valuable in the application of high speed ignition by detonation in engineering.