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

MENG Xiangwen; LI Zhen; TANG Yuanzheng; HE Yan; WU Xiaomin

doi:10.11949/j.issn.0438-1157.20180059

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

更新时间：2025-12-10

- Effects of negative electric field on C₃H₈/O₂/Ar/CO₂ flame characteristics under different CO₂ blending concentrations
- CIESC Journal Issue 12, Pages: 5229-5236(2018)
- 作者机构：
  
  1. 青岛科技大学机电工程学院,山东,青岛,266061
  2. 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.0438-1157.20180059
  CLC： K431
- Online First：05 December 2018，
  
  Published：05 December 2018
- 稿件说明：
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MENG Xiangwen, LI Zhen, TANG Yuanzheng, et al. Effects of negative electric field on C₃H₈/O₂/Ar/CO₂ flame characteristics under different CO₂ blending concentrations[J]. CIESC Journal, 2018, (12): 5229-5236. DOI: 10.11949/j.issn.0438-1157.20180059.
DOI：

MENG Xiangwen, LI Zhen, TANG Yuanzheng, et al. Effects of negative electric field on C₃H₈/O₂/Ar/CO₂ flame characteristics under different CO₂ blending concentrations[J]. CIESC Journal, 2018, (12): 5229-5236. DOI: 10.11949/j.issn.0438-1157.20180059. DOI：

摘要

为了揭示电场对火焰效应与火焰传播速率的关系，在定容燃烧弹上研究了常温常压下、负直流电场（U=0、-5、-10 kV）对当量燃空比f为1.0的C3H8/O2/Ar/CO2预混火焰影响规律随混合气中CO2掺混浓度（混合气中CO2体积分数分别为0、10%、15%、20%）的变化关系。实验结果表明：给定加载电压，随着CO2掺混浓度的增大，C3H8/O2/Ar/CO2预混火焰传播速率降低，规范化火焰变形率与平均火焰传播速率变化率均增大。当U=-10 kV时，CO2掺混浓度为0、10%、15%、20%时对应的平均火焰变形率分别为1.01、1.31、1.80、3.12，平均火焰传播速度变化率分别为10.87%、17.87%、19.16%和34.63%。研究结果表明负直流电场对C3H8/O2/Ar/CO2火焰传播的促进效应随着火焰传播速率的降低而显著增强。

Abstract

To study the influence of the flame propagation speed on the electric field-flame effects

an experiment was conducted on the constant volume combustion bomb to investigate the effects of negative direct current electric field(U=0

-5

-10 kV) on the C3H8/O2/Ar/CO2 premixed flame with the different CO2 blending concentrations at equivalent fuel/air ratio of 1.0

room temperature and atmospheric pressure. The CO2 blending concentrations are 0

10%

15%

and 20%

respectively. Given applied electric field and mixture concentration

the flame propagation speed of C3H8/O2/Ar/CO2 flame decreases with the CO2 blending concentrations increasing

while both the normalized flame deformation ratio and the mean change rate of the flame propagation speed increase. When U=-10 kV and C3H8/O2/Ar/CO2 flames with the CO2 blending concentrations of 0

10%

15%

and 20%

the mean normalized flame deformation ratios are 1.01

1.31

1.80

and 3.12

respectively. The mean change rate of the flame propagation speeds are 10.87%

17.87%

19.16%

and 34.63%

respectively. The results show that the promoting effect of negative DC electric field on C3H8/O2/Ar/CO2 flame propagation is significantly enhanced with the decrease of flame propagation rate.

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