方爆轰管内压力波和火焰加速过程的试验

发布时间：2018-07-09 18:14

本文选题：方爆轰管 + 缓燃　；参考：《江苏大学学报(自然科学版)》2017年01期

【摘要】：为探究缓燃向爆轰转捩过程中压力波与火焰加速的过程,在60 mm×60 mm×2 000 mm方爆轰管内,用乙炔(C2H2)和空气混合物进行了单次爆轰性能研究.试验在光滑爆轰管和加扰流器的爆轰管内分别进行,在爆轰管上按200 mm的间距同截面布置压力传感器与离子探针,用来监控压力波和火焰各自的信号.根据压力波和火焰位置、速度随时间的变化规律来分析压力波和火焰加速过程.结果表明:在光滑和加入扰流器的爆轰管内火焰的加速传播起主导作用;光滑管内峰值压力波速度大于初始压力波和火焰速度,而加入扰流片后,过爆前初始压力波、峰值压力波和火焰的速度基本上同步发展,过爆后初始压力波速度短暂跃升后最终三者耦合在一起形成爆轰波.
[Abstract]:In order to investigate the process of pressure wave and flame acceleration during slow flame-to-detonation transition, the single detonation performance of acetylene (C _ 2H _ 2) and air mixture was studied in 60 mm 脳 60 mm 脳 2 000 mm square detonation tube. The experiment was carried out in a smooth detonation tube and a scrambler respectively. Pressure sensors and ion probes were arranged at a distance of 200 mm on the detonation tube to monitor the pressure wave and the flame signals. The pressure wave and flame acceleration process are analyzed according to the pressure wave and flame position and the variation of velocity with time. The results show that the accelerated propagation of the flame in the smooth and scrambled detonation tube plays a leading role, the peak pressure wave velocity in the smooth tube is larger than the initial pressure wave and the flame velocity, but after adding the spoiler, the initial pressure wave before overdetonation is obtained. The peak pressure wave and the velocity of flame basically develop synchronously, and the initial pressure wave velocity after overdetonation rises briefly, and finally the three waves are coupled together to form detonation wave.
【作者单位】：江苏大学能源与动力工程学院;
【基金】：国家自然科学基金资助项目(51306073,11402102) 江苏省自然科学基金资助项目(BK20130510,BK20140524)
【分类号】：O38

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