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不同端面密封条件下缓燃-爆震转捩特性试验 被引量：2

Experimental study on characteristic of deflagration to detonation transition in different close end
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摘要 为研究不同端面封闭程度时缓燃-爆震转捩(DDT)的特性,在60 mm×60 mm×2 000 mm方爆震管内,在封闭端设置了5种阻塞比的方孔,针对4种余气系数用乙炔(C2H2)和空气混合物进行了单爆震性能研究.利用安装在同一截面上的压力传感器与离子探针同时测得缓燃向缓燃-爆震转捩(DDT)转捩位置处爆震管内的压力、火焰传播速度和方向.分析结果表明:①随端面阻塞比的增大,DDT的距离会变长;②端面的封闭程度并不影响DDT转捩的本质特性. In order to investigate the characteristic of deflagration to detonation transi tion （DDT） in close end with 5 kinds of block ratios, a series of single detonation experi ments were conducted to study the performance of acetylene-air mixtures in square detona tion tube of 60 mm × 60 mm × 2 000 mm. The ion-probes and pressure transducers were uti lized to get the velocity and pressure in the tube, respectively. The results indicate： （1） Po sition of DDT moves back with the accretion of block ratio in close end; （2） The block de gree does not affect essential characteristic of DDT.
作者 张彭岗 何小民 张靖周
机构地区 南京航空航天大学能源与动力学院
出处 《航空动力学报》 EI CAS CSCD 北大核心 2009年第1期32-37,共6页 Journal of Aerospace Power
基金 国家自然科学基金(50506012)
关键词 燃烧 爆震 缓燃-爆震转捩(DDT) combustion detonation deflagration to detonation transition （DDT）
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]
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参考文献10

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共引文献25

同被引文献33

  • 1Kuznetsov M,Alekseev V,Matsukov I,et al.DDT in a smooth tube filled with a hydrogen-oxygen mixture[J].Shock Waves,2005,14(3):205-215.
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航空动力学报
2009年 第1期

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