Upstream islands of flame in lifted-jet partially premixed combustion

被引：13
作者：
Lyons, K. M. [1 ]
Watson, K. A.
Carter, C. D.
Donbar, J. M.
机构：
[1] N Carolina State Univ, Dept Mech & Aerosp Engn, Raleigh, NC 27695 USA
[2] Univ Pacific, Dept Mech Engn, Stockton, CA 95211 USA
[3] USAF, Res Lab, AFRL PRA, Wright Patterson AFB, OH 45433 USA
来源：
COMBUSTION SCIENCE AND TECHNOLOGY | 2007年 / 179卷 / 05期
基金：
美国国家科学基金会;
关键词：
edge flames; flame stabilization; ignition; jet flames;
D O I：
10.1080/00102200600910858
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Contemporary interest exists in understanding the roles of leading edge flow deflection, secondary jet instabilities and islands of ignited gases in permitting lifted flames to stabilize. To assess these issues, elements of the leading-edge of a lifted turbulent jet flame have been investigated using laser-imaging techniques. Images of flame position, morphology and dynamics are presented primarily from CH planar laser-induced fluorescence (CH-PLIF) measurements. In particular, evidence of flame islands, or flame fragments, upstream of the bulk-flame leading edge are reported and discussed. This evidence is presented in the form of sequential CH-PLIF images and well as CH-PLIF/Rayleigh scattering images. Images showing thermal characteristics of the regions surrounding the edge flame are also described.
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页码：1029 / 1037
页数：9
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