Measurement of flame front structure of turbulent premixed flames for CH4/H2/air mixtures

被引：3
作者：
机构：
[1] State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University
来源：
Wang, J. | 1600年 / Xi'an Jiaotong University卷 / 47期
关键词：
Flame front structure; Hydrogen addition; Planar induced laser fluorescence; Turbulent premixed flame;
D O I：
10.7652/xjtuxb201311003
中图分类号：
学科分类号：
摘要：
The measurement of the flame front structure of CH4/H2/air flames was conducted using planar induced laser fluorescence (OH-PLIF) to study the effects of hydrogen blending on the premixed turbulence-flame interaction of natural gas. Various turbulence conditions were generated by perforated plates with different hole diameters and opening ratios. The scales of the turbulent flow were measured and the properties of laminar flames were calculated. The effects of hydrogen addition, turbulence intensity and turbulence scales on the flame-turbulence interaction of CH4/air turbulent premixed flames were discussed. The results show that the hydrogen addition significantly promoted the wrinkle intensity of the flame front, and the wrinkle intensity of the flame front increased with an increase in turbulence intensity. The flame height decreased slightly with an increase in hydrogen fraction and increased with an increase in turbulence intensity. The hydrogen addition facilitated the flame intrinsic instability, leading to the active response of laminar flame to turbulence and the highly wrinkled OH-PLIF flame front structure.
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页码：14 / 18
页数：4
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