Development of a hydrogen-air flame in a vertical channel with a horizontal diaphragm

被引：0
|
作者：
N. B. Anikin
A. A. Tyaktev
I. L. Bugaenko
Yu. A. Piskunov
S. I. Balabin
A. V. Pavlenko
机构：
[1] FSUE “RFNC—VNIITF named after Academ. E.I. Zababakhin”,
来源：
Atomic Energy | 2023年 / 134卷
关键词：
544.452.2;
D O I：
暂无
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学科分类号：
摘要：
The paper describes an experimental study of lean hydrogen-air flames in a 1490-mm-long closed vertical channel of a square 138×138 mm section behind a horizontal diaphragm with a diameter of 50 mm. Schlieren images of the flame in a homogeneous hydrogen-air mixture are given along with the pressure dynamics for the mixtures with 6, 8, and 16 vol.% of hydrogen. It is shown that shear instability behind the diaphragm leads to a local instability of the lateral surface of a lean hydrogen-air flame, which causes a short-wave perturbation that spreads over the flame surface and crumples it, thereby enhancing the combustion.
引用
收藏
页码：245 / 253
页数：8
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