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壁面喷射当量比对支板凹腔耦合燃烧的影响

韩啸 林宇震 张弛 王建臣

韩啸, 林宇震, 张弛, 等 . 壁面喷射当量比对支板凹腔耦合燃烧的影响[J]. 北京航空航天大学学报, 2017, 43(5): 969-974. doi: 10.13700/j.bh.1001-5965.2016.0352
引用本文: 韩啸, 林宇震, 张弛, 等 . 壁面喷射当量比对支板凹腔耦合燃烧的影响[J]. 北京航空航天大学学报, 2017, 43(5): 969-974. doi: 10.13700/j.bh.1001-5965.2016.0352
HAN Xiao, LIN Yuzhen, ZHANG Chi, et al. Effect of equivalence ratio of wall injection on strut-cavity coupled combustion[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(5): 969-974. doi: 10.13700/j.bh.1001-5965.2016.0352(in Chinese)
Citation: HAN Xiao, LIN Yuzhen, ZHANG Chi, et al. Effect of equivalence ratio of wall injection on strut-cavity coupled combustion[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(5): 969-974. doi: 10.13700/j.bh.1001-5965.2016.0352(in Chinese)

壁面喷射当量比对支板凹腔耦合燃烧的影响

doi: 10.13700/j.bh.1001-5965.2016.0352
详细信息
    作者简介:

    韩啸, 男, 博士研究生。主要研究方向:液雾燃烧

    林宇震,男,博士,教授,博士生导师。主要研究方向:航空发动机燃烧室及超声速燃烧

    张弛,男,博士,副教授,硕士生导师。主要研究方向:航空发动机燃烧室及替代燃料

    王建臣,男,博士。主要研究方向:超声速燃烧

    通讯作者:

    林宇震, E-mail:linyuzhen@buaa.edu.cn

  • 中图分类号: V221+.3;TB553

Effect of equivalence ratio of wall injection on strut-cavity coupled combustion

More Information
  • 摘要:

    在纯净空气来流条件下,对于全高后掠支板与凹腔耦合的燃烧室,采用分级喷射供油,对比研究了壁面喷射当量比对壁面压力和燃烧性能的影响。结果表明:在支板喷射当量比一定的情况下,随着壁面喷射当量比增加,壁面静压峰值升高,静压开始提升的位置向上游移动,总当量比达到1.1时发生溢流;一维分析表明,马赫数在支板附近降到1以下,在凹腔处达到0.5左右,在出口扩张段恢复至1以上,燃烧室处于亚燃模态;燃烧性能方面,保持支板喷射当量比一定,随着壁面喷射当量比的增加,总压恢复系数提高,出口总温增加,燃烧效率降低。

     

  • 图 1  实验系统图[21]

    Figure 1.  Schematic of experimental system[21]

    图 2  燃烧室结构简图

    Figure 2.  Schematic of combustor

    图 3  不同喷射当量比工况壁面压力对比

    Figure 3.  Comparison of wall pressure among cases with different injection equivalence ratios

    图 4  一维分析马赫数沿程分布

    Figure 4.  Distributions of Mach number from one-dimensional analysis along axial direction

    图 5  一维分析总温沿程分布

    Figure 5.  Distributions of total temperature from one-dimensional analysis along axial direction

    图 6  一维分析静温沿程分布

    Figure 6.  Distributions of static temperature from one-dimensional analysis along axial direction

    图 7  一维分析总压沿程分布

    Figure 7.  Distributions of total pressure from one-dimensionalanalysis along axial direction

    表  1  实验工况

    Table  1.   Experimental operation conditions

    工况 壁面喷射当量比 支板喷射当量比 总当量比
    1 0.12 0.70 0.82
    2 0.20 0.70 0.90
    3 0.30 0.70 1.00
    4 0.12 0.80 0.92
    5 0.20 0.80 1.00
    6 0.30 0.80 1.10
    下载: 导出CSV

    表  2  不同工况燃烧性能参数

    Table  2.   Combustion characteristic parameters under different operation conditions

    工况 总压恢复系数/% 出口总温/K 燃烧效率/%
    1 48.3 2033.92 69.4
    2 48.9 2100.31 69.0
    3 50.5 2121.43 64.5
    4 48.4 2089.50 67.1
    5 50.1 2128.63 65.1
    下载: 导出CSV
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出版历程
  • 收稿日期:  2016-04-28
  • 录用日期:  2016-06-12
  • 刊出日期:  2017-05-20

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