Micro Methane-Oxygen Counterflow Diffusion Flames: Effects of Gravity on Flame Structures
Micro Methane-Oxygen Counterflow Diffusion Flames: Effects of Gravity on Flame Structures
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DOI：
10.1088/1742-6596/1052/1/012065
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发表时间：
2018-07
期刊：
影响因子：
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通讯作者：
S. Kadowaki;Y. Hashimoto;T. Katsumi;T. Aung;T. Matsuoka;Y. Nakamura
中科院分区：
文献类型：
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作者：
S. Kadowaki;Y. Hashimoto;T. Katsumi;T. Aung;T. Matsuoka;Y. Nakamura
我们通过小规模操纵甲烷的富氧燃烧来研究重力场下微逆流扩散火焰的特性。在逆流燃烧器中观察到甲烷-氧气扩散火焰，燃烧器距离小于或等于1.0 mm，表观当量比为1。获得火焰厚度和火焰直径作为燃烧器距离和气体流速的函数。随着燃气流量的增加，观察火焰的最小燃烧器距离变小。当甲烷从上燃烧器流出时，我们得到了较小的最小燃烧器距离值。随着燃烧器距离变小，火焰厚度和火焰直径减小。此外，在上层甲烷情况下，火焰厚度和火焰直径的值稍大。
We manipulated oxy-fuel combustion of methane in small scales to study the characteristics of micro counterflow diffusion flames under the gravity field. Methane-oxygen diffusion flames in counterflow burners were observed, where the burner distance was less than or equal to 1.0 mm and the apparent equivalence ratio was unity. The flame thickness and flame diameter were obtained as functions of the burner distance and gas flow rate. The minimum burner distance for the observation of flames became smaller as the gas flow rate increased. We obtained smaller values of the minimum burner distance when methane flowed out from the upper burner. The flame thickness and flame diameter decreased as the burner distance became smaller. In addition, the flame thickness and flame diameter had slightly larger values in the upper-methane case.