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丙烷/空气稀薄预混合气流动下的激光点火特性

张俊杰 郭晓阳 王朝君 胡二江 黄佐华

张俊杰, 郭晓阳, 王朝君, 等. 丙烷/空气稀薄预混合气流动下的激光点火特性[J]. 航空动力学报, 2023, 38(3):630-639 doi: 10.13224/j.cnki.jasp.20210449
引用本文: 张俊杰, 郭晓阳, 王朝君, 等. 丙烷/空气稀薄预混合气流动下的激光点火特性[J]. 航空动力学报, 2023, 38(3):630-639 doi: 10.13224/j.cnki.jasp.20210449
ZHANG Junjie, GUO Xiaoyang, WANG Chaojun, et al. Laser ignition characteristics in propane/air lean premixed gas flow[J]. Journal of Aerospace Power, 2023, 38(3):630-639 doi: 10.13224/j.cnki.jasp.20210449
Citation: ZHANG Junjie, GUO Xiaoyang, WANG Chaojun, et al. Laser ignition characteristics in propane/air lean premixed gas flow[J]. Journal of Aerospace Power, 2023, 38(3):630-639 doi: 10.13224/j.cnki.jasp.20210449

丙烷/空气稀薄预混合气流动下的激光点火特性

doi: 10.13224/j.cnki.jasp.20210449
基金项目: 国家科技重大专项(2017- Ⅰ -0007-0033)
详细信息
    作者简介:

    张俊杰(1998-),男,硕士生,主要从事激光点火特性研究

    通讯作者:

    胡二江(1983-),男,教授,博士,主要从事航空发动机点火和燃烧调控研究。E-mail:hujiang@mail.xjtu.edu.cn

  • 中图分类号: V233.3;TK401

Laser ignition characteristics in propane/air lean premixed gas flow

  • 摘要:

    基于流动点火平台,在不同当量比和流速下,对丙烷/空气稀薄预混气进行了激光点火实验。研究发现:随着当量比和流速的增加,火焰发展速度加快且火焰面积增大;火焰中的CH*发光强度随当量比提升有明显提高,通过CH*的分布及发光强度变化能判断火焰发展阶段。混合气的击穿和点火成功率都随当量比和流速的增加而增加,但改变当量比对成功率的影响比改变流速更大;通过击穿发射光谱中的H/N峰值强度比,可以判断混合气中各组分的含量变化,且使用标定线能确定未知预混合气的当量比。

     

  • 图 1  流动管激光点火实验系统图

    Figure 1.  Diagram of laser ignition in flow tube experimental system

    图 2  不同当量比下的火焰发展图片

    Figure 2.  Flame development pictures for different equivalence ratios

    图 3  不同流速下的火焰发展图片

    Figure 3.  Flame development pictures for different velocities of flow

    图 4  不同当量比下的CH*分布

    Figure 4.  CH* distribution for different equivalence ratios

    图 5  不同当量比下的CH*强度

    Figure 5.  CH* intensity for different equivalent ratios

    图 6  不同当量比下的击穿成功率

    Figure 6.  Probability of breakdown for different equivalence ratios

    图 7  不同流速下的击穿成功率

    Figure 7.  Probability of breakdown for different velocities of flow

    图 8  不同点火能量下的点火成功率与当量比的关系

    Figure 8.  Relationship between probability of ignition and equivalent ratio under different ignition energies

    图 9  不同当量比下的点火成功率

    Figure 9.  Probability of ignition for different equivalence ratios

    图 10  不同流速下的点火成功率

    Figure 10.  Probability of breakdown for different velocities of flow

    图 11  不同当量比和流速下的击穿发射光谱

    Figure 11.  Breakdown emission spectra for different equivalent ratios and velocities of flow

    图 12  不同流速下的H/N峰值强度比

    Figure 12.  H/N peak intensity ratio at different velocities of flow

    表  1  实验工况

    Table  1.   Experimental conditions

    实验内容当量比ϕ流速/(m/s)入射能量/mJ
    火焰发展0.63, 0.65, 0.68, 0.70120
    0.58, 0.601,2100
    CH*分布0.65, 0.70150
    击穿0.55, 0.60, 0.65, 0.7017~12
    0.55, 0.701,27~12
    点火0.55, 0.58, 0.60, 0.63, 0.65, 0.68, 0.70120,40,80
    0.55, 0.58, 0.60, 0.63120~120
    0.58, 0.601,220~120
    发射光谱0.40, 0.50, 0.60, 0.70150
    0.55, 0.701,250
    下载: 导出CSV

    表  2  不同当量比的击穿成功率拟合参数及结果

    Table  2.   Fitting parameters and probability of breakdown for different equivalence ratios

    当量比ϕC1C2Eb10/mJEb50/mJEb90/mJ
    0.552.28680.07418.959.8510.85
    0.602.27560.07528.859.7510.72
    0.652.25260.08638.559.5110.62
    0.702.23980.08818.409.3910.54
    下载: 导出CSV

    表  3  不同流速的击穿成功率拟合参数及结果

    Table  3.   Fitting parameters and probability of breakdown for different velocities of flow

    当量比ϕ流速/(m/s)C1C2Eb10/mJEb50/mJEb90/mJ
    0.5512.28680.07418.959.8510.85
    0.7012.23980.08818.409.3910.54
    0.5522.26320.09028.579.6110.80
    0.7022.21370.10318.029.1510.44
    下载: 导出CSV

    表  4  不同当量比的点火成功率拟合参数及结果

    Table  4.   Fitting parameters and probability of ignition for different equivalence ratios

    当量比ϕC1C2E10/mJE50/mJE90/mJ
    0.555.74080.938193.6311.31035.4
    0.584.44040.705834.384.8209.6
    0.603.94520.596724.151.7111.5
    0.633.26990.57526.926.355.0
    下载: 导出CSV

    表  5  不同流速的点火成功率拟合参数及结果

    Table  5.   Fitting parameters and probability of ignition for different velocities of flow

    当量比ϕ流速/(m/s)C1C2E10/mJE50/mJE90/mJ
    0.5814.44040.705834.384.8209.6
    0.6013.94520.596724.151.7111.0
    0.5824.20190.503035.166.8127.3
    0.6023.72470.586119.641.587.9
    下载: 导出CSV

    表  6  不同流速下的H/N谱线强度比拟合参数

    Table  6.   Fitting parameters of H/N spectral line intensity ratio at different velocities of flow

    H/N类型流速/(m/s)截距斜率R2
    H656/N74212.0367611.799810.99913
    H656/N74411.247867.905780.99626
    H656/N74610.797496.045090.99973
    H656/N74222.2974411.392190.99952
    H656/N74421.293927.930070.99628
    H656/N74620.813176.098560.99792
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-08-13
  • 网络出版日期:  2022-09-07

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