Dynamic Flame Behavior in Lean Premixed Burner with Swirling Flow

被引：0
|
作者：
Komiyama, M. [1 ]
Takeishi, T. [1 ]
Ogawa, Y. [1 ]
机构：
[1] Osaka Univ, Dept Mech Engn, 2-1 Yamada Oka, Suita, Osaka 5650871, Japan
来源：
THMT-12. PROCEEDINGS OF THE SEVENTH INTERNATIONAL SYMPOSIUM ON TURBULENCE, HEAT AND MASS TRANSFER | 2012年
关键词：
COMBUSTION; FLASHBACK;
D O I：
10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2310
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Lean premixed combustion is one of the most efficient techniques to reduce nitrogen oxide (NOx) emission. However, lean premixed combustors have narrow stable combustion range compared with diffusion combustors and have a risk of flashback. Flashback of flame into a fuel nozzle causes serious damage to a combustor. In this study, we present characteristics of flame propagation in a premixed burner with swirling flow in order to investigate unsteady flame behavior in the premixer. Two kinds of mixture gas supply techniques were used in order to investigate the characteristics of flame propagation. One is a normal closed center swirler and the other one open center swirler. The characteristics of flame propagation interacting with flow fields in a premixer have been investigated by applying high-speed particle image velocimetry (PIV) measurement.
引用
收藏
页码：2245 / 2257
页数：13
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