Effects of Electric Field Distribution on Deformation Rates of Spherical Propagation Flame

doi:10.7652/xjtuxb201505008

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Effects of Electric Field Distribution on Deformation Rates of Spherical Propagation Flame

更新时间：2025-07-09

- Effects of Electric Field Distribution on Deformation Rates of Spherical Propagation Flame
- Vol. 49, Issue 5, Pages: 49-55(2015)
- 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/xjtuxb201505008
  CLC： TK431
- Online First：10 May 2015，
  
  Published：2015
- 稿件说明：
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Effects of Electric Field Distribution on Deformation Rates of Spherical Propagation Flame[J]. 2015, 49(5): 49-55.
DOI：

Effects of Electric Field Distribution on Deformation Rates of Spherical Propagation Flame[J]. 2015, 49(5): 49-55. DOI： 10.7652/xjtuxb201505008.

摘要

针对电场作用下球形传播火焰的变形问题

利用Maxwell 14.0软件分别对点状、环状、直径为20 mm和60 mm的网状等4种电极产生的电场进行了模拟

同时在常温、常压下

定容燃烧弹中过量空气系数为1.2时

通过对这4种结构的电极施加负电压(-5 kV和-10 kV)对甲烷/空气预混火焰在不同方向(与水平方向夹角为0°、15°、30°、45°、60°和70°)上的火焰变形率进行了研究。结果显示:施加负电压时

环状电极下的火焰在不同方向上的平均变形率最小

点状电极的次之

直径为20 mm网状电极比点状电极的稍大; 直径为60 mm网状电极下施加-5 kV电压时

火焰在不同方向上的平均变形率与点状电极的差别不大

施加-10 kV电压时

火焰在大于45°方向上的平均火焰变形率最大。由此表明

环状电极的电场分布有利于火焰的均匀发展

可以降低火焰淬熄的可能性。

Abstract

The electric fields around point electrode

ring electrode

and mesh electrodes with diameters of 20 mm and 60 mm are simulated with Ansoft Maxwell software

and the electric field distributions in constant volume combustion bomb are obtained. An experiment is also conducted to investigate the different influences of the four electrodes under applied negative voltages(-5 kV and -10 kV)on the deformation rates in different directions(at angels of 0°

15°

30°

45°

60° and 70° to the plane)of premixed CH

/air mixtures at the excess air ratio of 1.2 room temperature and atmospheric pressure. The results show that the average flame deformation rates in different directions of the ring electrode get the minimum in the ca

se of negative voltages

followed by point electrode and mesh electrode with diameter of 20 mm. As applied voltage of -5 kV

the average flame deformation rates in different directions of the mesh electrode with diameter of 60 mm slightly differ from those of point electrode. As applied voltage of -10 kV

the average flame deformation rates over 45° get larger than those of the other electrodes and the flame deforms greatly

the electric field distribution of the ring electrode thus is beneficial for whole flame development to reduce the probability of flame quenching

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references

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