Flame height measurement of laminar inverse diffusion flames

被引：110
作者：
Mikofski, Mark A.
Williams, Timothy C.
Shaddix, Christopher R.
Blevins, Linda G.
机构：
[1] Univ Calif Berkeley, Micrograv Combust Lab, Berkeley, CA 94720 USA
[2] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94550 USA
来源：
COMBUSTION AND FLAME | 2006年 / 146卷 / 1-2期
基金：
美国国家航空航天局;
关键词：
inverse diffusion flame; laminar; flame height; OH; laser-induced fluorescence;
D O I：
10.1016/j.combustflame.2006.04.006
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Flame heights of co-flowing cylindrical ethylene-air and methane-air laminar inverse diffusion flames were measured. The luminous flame height was found to be greater than the height of the reaction zone determined by planar laser-induced fluorescence (PLIF) of hydroxyl radicals (OH) because of luminous soot above the reaction zone. However, the location of the peak luminous signals along the centerline agreed very well with the OH flame height. Flame height predictions using Roper's analysis for circular port burners agreed with measured reaction zone heights when using values for the characteristic diffusion coefficient and/or diffusion temperature somewhat different from those recommended by Roper. The fact that Roper's analysis applies to inverse diffusion flames is evidence that inverse diffusion flames are similar in structure to normal diffusion flames. (c) 2006 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
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页码：63 / 72
页数：10
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