Quantitative Analysis of Flame Instabilities in a Hele-Shaw Burner
Quantitative Analysis of Flame Instabilities in a Hele-Shaw Burner
复制标题
Hele-Shaw 燃烧器火焰不稳定性的定量分析
DOI：
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发表时间：
2018
影响因子：
2.4
通讯作者：
B. Denet
中科院分区：
文献类型：
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作者：
E. Sarraf;C. Almarcha;Joël Quinard;Basile Radisson;B. Denet
本文证明了Hele-Shaw燃烧器可以用于研究准二维结构中预混火焰不稳定性的发展。可以在细胞顶部点燃平面火焰，并通过图像分析定量测量不稳定性的增长速率。实验用丙烷和甲烷-空气混合物进行。我们发现，在本实验中直接测量到的最不稳定的波长和扰动的最大线性增长率与以前在宽管中向下自由传播的火焰上测量到的波长和扰动的最大线性增长率具有相同的数量级。
We show in this paper that a Hele-Shaw burner can be used for studying the development of premixed flame instabilities in a quasi-two dimensional configuration. It is possible to ignite a plane flame at the top of the cell, and to measure quantitatively the growth rates of the instability by image analysis. Experiments are performed with propane and methane-air mixtures. It is found that the most unstable wavelength, and the maximum linear growth rate of perturbations, directly measured in the present experiments, have the same order of magnitude as those previously measured on flames propagating freely downwards in wide tubes.