Flame quenching process in cavity based on model scramjet combustor

被引:0
作者
Yu Pan
Jing Lei
Jian-Han Liang
Wei-Dong Liu
Zhen-Guo Wang
机构
[1] National University of Defense Technology,Department of Aerospace and Material
来源
Acta Mechanica Sinica | 2012年 / 28卷
关键词
Flame quenching process; Cavity; Model scramjet combustor;
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摘要
The flame quenching process in combustors was observed by high speed camera and Schlieren system, at the inflow conditions of Ma = 2.64, T0 = 1 483 K, P0 = 1.65MPa, T = 724K and P = 76.3 kPa. Changing process of the flame and shock structure in the combustor was clearly observed. The results revealed that the precombustion shock disappeared accompanied with the process in which the flame was blown out and withdrawed from the mainflow into the cavity and vanished after a short while. The time of quenching process was extended by the cavity flame holder, and the ability of flame holding was enhanced by arranging more cavities in the downstream as well. The flame was blown from the upstream to the downstream, so the flame in the downstream of the cavity was quenched out later than that in the upstream.
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页码:73 / 78
页数:5
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