Effects of negative DC electric fields on CH<sub>4</sub>/airpremixed flame at different initial pressures

HOU Juncai; LI Chao; JIA Weidong; WEI Xuxing; LI Yiming; MENG Hao; ZHANG Qing'ang; WU Xiaomin

doi:10.11949/j.issn.0438-1157.20170658

您当前的位置：

首页 >

文章列表页 >

Effects of negative DC electric fields on CH₄/airpremixed flame at different initial pressures

更新时间：2025-12-10

- Effects of negative DC electric fields on CH₄/airpremixed flame at different initial pressures
- CIESC Journal Issue 4, Pages: 1602-1610(2018)
- 作者机构：
  
  西安交通大学能源与动力工程学院,陕西,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170658
  CLC： K431
- Online First：05 April 2018，
  
  Published：05 April 2018
- 稿件说明：
移动端阅览
HOU Juncai, LI Chao, JIA Weidong, et al. Effects of negative DC electric fields on CH₄/airpremixed flame at different initial pressures[J]. CIESC Journal, 2018, (4): 1602-1610. DOI: 10.11949/j.issn.0438-1157.20170658.
DOI：

HOU Juncai, LI Chao, JIA Weidong, et al. Effects of negative DC electric fields on CH₄/airpremixed flame at different initial pressures[J]. CIESC Journal, 2018, (4): 1602-1610. DOI: 10.11949/j.issn.0438-1157.20170658. DOI：

摘要

在定容燃烧弹中研究了常温（298 K），初始压力Pinitial为0.1～0.5 MPa，加载U=-5、-10 kV直流电场对甲烷/空气预混火焰燃烧特性的影响。结果表明：不同初始压力下，加载电压，火焰主要在水平方向发生拉伸变形，加载电压幅值越高，火焰变形越明显，初始压力越高，火焰不稳定性增加，火焰面褶皱增加。加载电压后，火焰传播速率明显提高，电压幅值增大，其提高程度逐渐明显，初始压力增大，其提高程度更加明显，电场对火焰的促进效果更加明显，λ=1.4，U=-10 kV，Pinitial=0.1～0.5 MPa时，平均火焰传播速率分别提高35.67%～52.71%。相对于未加载电压，加载电压后，各初始压力下质量燃烧率均增大，随电压幅值升高而升高，且初始压力越大，质量燃烧率变化越明显；火焰的初始燃烧期和主燃烧期均缩短，初始压力越高，缩短程度也越明显，二者相比，初始燃烧期缩短的程度更为明显。

Abstract

The effect of DC electric field on methane/air premixed flame was studied under the room temperature (298 K) and initial pressure Pinitial of 0.1-0.5 MPa. The results are as follows. The flame is mainly stretched in the horizontal direction with the applied voltage under different initial pressures. The change of the flame deformation increases with the voltage amplitude. The flame instability increases with the initial pressure. Compared to without the applied voltage

the flame propagation speed is improved obviously with the applied voltage

and the enhancement in flame propagation speed increases with the voltage amplitude and initial pressure

so the effect of the electric fields on the flame increases with the initial pressure. When λ=1.4

U=-10 kV

and Pinitial=0.1-0.5 MPa

the average flame propagation speed increases by 35.67%-52.71%. The enhancement in the mass burning rate increases with the voltage amplitude and the initial pressure with the applied voltage. The initial burning period and the main combustion period are shortened with the applied voltage

and the decrease in them increase with the initial pressure

and the change of the initial burning period is more obvious.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effects of negative electric field on C3H8/O2/Ar/CO2 flame characteristics under different CO2 blending concentrations

Effects of electric fields on combustion characteristics of methane-air mixtures

Research progress on carbon quantum dots-enhanced biomethanation by methanogens

Research on A-site doped LaFeO3 perovskite oxygen carriers for chemical looping reforming

Mechanistic study of Mn/Ce co-doping for enhanced oxygen species conversion and catalytic combustion of dilute methane

Related Author

MENG Xiangwen

LI Zhen

TANG Yuanzheng

HE Yan

FANG Jianfeng

ZHAO Haijun

ZHOU Hui

GE Shuqing

Related Institution

College of Electromechanical Engineering, Qingdao University of Science and Technology

School of Machinery Engineering, Luoyang Institute of Science and Technology

Institute of Internal Combustion Engine, Xi'an Jiaotong University

College of New Energy and Materials, China University of Petroleum

State Key Laboratory of Heavy Oil Processing

⁰

Effects of negative DC electric fields on CH4/airpremixed flame at different initial pressures

DOI：10.11949/j.issn.0438-1157.20170658

摘要

Abstract

关键词

Keywords

references

Effects of negative DC electric fields on CH₄/airpremixed flame at different initial pressures