Study of Hydrogen Turbulent Non-premixed Flame Stabilization in Coaxial Air Flow

被引：1
|
作者：
Oh, Jeongseog
Kim, Munki
Choi, Yeongil
Yoon, Youngbin
机构：
来源：
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS B | 2008年 / 32卷 / 03期
关键词：
Hydrogen; Liftoff Flame; OH PLIF; PIV;
D O I：
10.3795/KSME-B.2008.32.3.190
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
It was experimentally studied that the stabilization mechanism of turbulent, lifted jet flames in a non-premixed condition to reveal the newly found liftoff height behavior of hydrogen jet. The objectives are to report the phenomenon of a liftoff height decreasing as increasing fuel velocity, to analyse the flame structure and behavior of the lifted jet, and to explain the mechanisms of flame stability in hydrogen turbulent non-premixed jet flames. The hydrogen jet velocity was changed from 100 to 300m/s and a coaxial air velocity was fixed at 16m/s with a coflow air less than 0.1m/s. For the simultaneous measurement of velocity field and reaction zone, PIV and OH PLIF technique was used with two Nd:Yag lasers and CCD cameras. As a result, it was found that the stabilization of lifted hydrogen diffusion flames is correlated with a turbulent intensity and Karlovitz number.
引用
收藏
页码：190 / 197
页数：8
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