Effect of Point and Mesh Electrodes with Applied Negative Voltage on Premixed Lean Combustion

doi:10.7652/xjtuxb201401006

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Effect of Point and Mesh Electrodes with Applied Negative Voltage on Premixed Lean Combustion

更新时间：2025-07-09

- Effect of Point and Mesh Electrodes with Applied Negative Voltage on Premixed Lean Combustion
- Vol. 48, Issue 1, Pages: 31-36(2014)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201401006
  CLC： TK431
- Online First：10 January 2014，
  
  Published：2014
- 稿件说明：
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Effect of Point and Mesh Electrodes with Applied Negative Voltage on Premixed Lean Combustion[J]. 2014, 48(1): 31-36.
DOI：

Effect of Point and Mesh Electrodes with Applied Negative Voltage on Premixed Lean Combustion[J]. 2014, 48(1): 31-36. DOI： 10.7652/xjtuxb201401006.

摘要

针对相同能耗下电极形状对火焰的影响

研究了常温、常压下定容燃烧弹中过量空气系数为1.6时甲烷空气预混稀燃火焰的传播和燃烧特性与加载电压的关系

对比了点电极和网状电极对火焰的影响。结果表明:2种电极下加载电压都使得火焰发生了形变

对火焰横向传播均有明显的促进作用; 与未加载电压相比

当加载电压为-5、-10、-12 kV时

点电极下火焰纵向传播速度分别提高9.32%、17.20%、4.67%

网状电极下分别提高0.62%、-20.90%、-22.80%

点电极下压力峰值增幅分别为6.4%、9.8%、11.2%

网状电极下增幅分别为5.6%、2.4%、1.3%; 加载-5 kV电压时2种电极对火焰的影响相差不大

加载-10、-12 kV电压时点电极对火焰的促进作用明显优于网状电极。综合考虑可以得出

点电极的性能更加优越。

Abstract

An experiment was conducted to investigate the different influences of the point electrode and the mesh electrode with applied voltages on the flame propagation and combustion characteristics of premixed CH

/air mixtures at the excess air ratio of 1.6

room temperature

and atmospheric pressure. The results show that the flame shape deformed and the horizontal flame speed significantly increased when the voltage was applied to the two kinds of electrodes. Compared with those without the applied voltage

when the applied voltage was -5 kV

-10 kV and -12 kV

the vertical flame speed of the point electrode increased by 9.32%

17.20% and 4.67% while that of the mesh electrode increased by 0.62%

-20.9% and -22.8%

respectively; t

he peak pressure of the point electrode rose by 6.4%

9.8%

11.2% while that of the mesh electrode rose by 5.6%

2.4% and 1.3%

respectively. The two electrodes had slightly different effect on the flame at the input voltage of -5 kV while the point electrode was more beneficial to the flame propagation and combustion at the input voltages of -10 kV and -12 kV. It is likely that the point electrode performed better.

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references

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