掺混臭氧对微圆管内甲烷/氢气/氧气爆轰特性的影响  

Effect of adding ozone on propagation characteristics of methane/hydrogen/oxygen detonation wave in millimeter tube

作　　者：张顺 潘剑锋[1] 李剑星 陈祥 ZHANG Shun;PAN Jianfeng;LI Jianxing;CHEN Xiang(School of Energy and Power Engineering,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013

出　　处：《热科学与技术》2022年第4期390-395,共6页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目(91641113,51976082)。

摘　　要：为研究掺混O对2CH_(4)-2H_(2)-5O_(2)混合气火焰、由缓燃向爆震转捩(DDT)过程及爆轰波传播特性的影响,使用高速摄像机(CCD)观测了不同O_(3)质量浓度(0.00%、0.44%、0.95%、1.40%、2.00%)下,2CH_(4)-2H_(2)-5O_(2)混合气在不同内径的毫米级(3.00、5.00、7.00 mm)管道内的火焰传播情况,进而分析了掺混O_(3)对2CH_(4)-2H_(2)-5O_(2)DDT过程及爆轰波传播特性的影响。实验结果表明,添加臭氧可以显著加速火焰的传播速度,从而加快爆燃向爆轰(DDT)过程,缩短起爆距离。在相同管径下,随着混合臭氧质量浓度的增加,火焰的传播速度增加,起爆距离减小。而当添加的臭氧比率相同时,随着管道直径的减小,起爆距离缩短。To study the effect of ozone on the detonation propagation of methane-hydrogen-oxygen in tubes of 3, 5, and 7 mm. various concentrations of ozone(0.00%, 0.44%, 0.95%, 1.40%, 2.00%) were introduced. Flame propagation through tube was observed using a high-speed changed-coupled device(CCD) camera. The experimental results show that the addition of ozone can significantly accelerate the flame propagation, and hence promote the transition of deflagration to detonation(DDT) process and shorten the detonation distance. For the same tube diameter, as the concentration of the mixed ozone increases, the flame propagation speed increases and the detonation distance decreases. Further, when the adding ozone ratio is the same, the detonation distance is shortened as the tube diameter is decreased.

关 键 词：臭氧 爆轰 起爆距离 传播速度 缓燃向爆轰转捩 

分 类 号：V231.22[航空宇航科学与技术—航空宇航推进理论与工程] V430