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高马赫数下超声速燃烧的自点火查表方法

张锦成 王振国 孙明波 汪洪波 王亚男 刘朝阳

张锦成, 王振国, 孙明波, 汪洪波, 王亚男, 刘朝阳. 高马赫数下超声速燃烧的自点火查表方法. 力学学报, 2022, 54(6): 1548-1556 doi: 10.6052/0459-1879-21-635
引用本文: 张锦成, 王振国, 孙明波, 汪洪波, 王亚男, 刘朝阳. 高马赫数下超声速燃烧的自点火查表方法. 力学学报, 2022, 54(6): 1548-1556 doi: 10.6052/0459-1879-21-635
Zhang Jincheng, Wang Zhenguo, Sun Mingbo, Wang Hongbo, Wang Yanan, Liu Chaoyang. Auto-ignition tabulated method for supersonic combustion at high Mach number. Chinese Journal of Theoretical and Applied Mechanics, 2022, 54(6): 1548-1556 doi: 10.6052/0459-1879-21-635
Citation: Zhang Jincheng, Wang Zhenguo, Sun Mingbo, Wang Hongbo, Wang Yanan, Liu Chaoyang. Auto-ignition tabulated method for supersonic combustion at high Mach number. Chinese Journal of Theoretical and Applied Mechanics, 2022, 54(6): 1548-1556 doi: 10.6052/0459-1879-21-635

高马赫数下超声速燃烧的自点火查表方法

doi: 10.6052/0459-1879-21-635
基金项目: 国家自然科学基金(12002373, 12002381)和湖南省自然科学基金(2021JJ40656)项目资助
详细信息
    作者简介:

    汪洪波, 研究员, 主要研究方向: 高超声速推进技术. E-mail: whbwatch@nudt.edu.cn

  • 中图分类号: V231.2

AUTO-IGNITION TABULATED METHOD FOR SUPERSONIC COMBUSTION AT HIGH MACH NUMBER

  • 摘要: 超燃冲压发动机燃烧室工作在高马赫数工况时, 入口来流空气的总焓非常高, 自点火在高焓条件下成为维持火焰稳定的重要物理化学过程. 本文借鉴火焰面/进度变量模型的降维思路, 发展了一种基于化学动力学的自点火建表方法. 通过定义混合分数和进度变量将复杂多维的化学反应降维, 并成功将数据库方法结合到现有的大涡模拟求解器中. 经过测试和验证, 该方法初步具备对超声速自点火燃烧进行仿真描述的能力. 针对自点火诱导的超声速燃烧问题开展数值模拟, 该方法通过查表的方式有效降低了化学反应求解过程中的计算量. 在采用详细化学反应机理时能够准确地再现自点火行为和火焰结构, 并且预测的温度和重要组分分布与实验吻合较好.

     

  • 图  1  化学反应动力学计算出的温度和H2曲线

    Figure  1.  Temperature and H2 curves calculated by chemical reaction kinetics

    图  2  H2O的生成率和反应释热率

    Figure  2.  Generation rate of H2O and reaction heat release rate

    图  3  进度变量采样点分布

    Figure  3.  Distribution of value points for progress variables

    图  4  OH基质量分数和温度随进度变量的变化

    Figure  4.  Variation of OH mass fraction and temperature with progress variables

    图  5  H2反应速率和进度变量生成率变化曲线

    Figure  5.  H2 generation rate and progress variable generation rate curve

    图  6  数据库查表插值示意图

    Figure  6.  Schematic diagram of lookup and interpolation from the auto-ignition database

    图  7  混合分数Z守恒的验证

    Figure  7.  Verification of mixture fraction Z conservation

    图  8  组分H2和H2O质量分数在反应中的变化

    Figure  8.  Variation of H2 and H2O mass fraction in the reaction

    图  9  不同初始温度下温度随时间变化

    Figure  9.  Temperature variation with time at different initial temperatures

    图  10  Gamba实验构型计算域示意图 (单位: mm)

    Figure  10.  Schematic diagram of the computational domain of the Gamba’s experiments (unit: mm)

    图  11  中心截面上OH分布云图

    Figure  11.  OH distribution on the central section

    图  12  Burrows–Kurkov实验构型计算域示意图 (单位: mm)

    Figure  12.  Schematic diagram of the computational domain of the Burrows–Kurkov experimental configuration (unit: mm)

    图  13  中心截面上温度和OH基的分布

    Figure  13.  Distributions of temperature and mass fration of OH at the central slice

    图  14  出口位置(x = 356 mm)总温剖面

    Figure  14.  Total temperature profile at the outlet (x = 356 mm)

    表  1  初始参数的范围和取值

    Table  1.   Range and value of control parameters

    ParameterRangeNValue
    Z0~135$ \lg ({i_Z} + 1)/\lg 16 \times 0.0283 $, $ 1 \leqslant {i_Z} \leqslant 15 $
    $0.0283 + {2^{(i - 15)/2}}/{2^{10}} \times 0.9727,$ $ 16 \leqslant {i_Z} \leqslant 35 $
    p/MPa0.05~1200.05ip
    T0/K850~155030850 + 20iT
    下载: 导出CSV

    表  2  Burrows–Kurkov实验射流和来流参数

    Table  2.   Jet and inflow parameters in Burrows–Kurkov experiment

    ParameterJetInflow
    Ma 2.4 1
    T/K 1237.9 261.7
    p/Pa 96000.0 114465.5
    $ {Y_{\rm{O_2}}} $ 0.258 0.0
    $ {Y_{\rm{H_2}O}} $ 0.256 0.0
    $ {Y_{\rm{H_2}}} $ 0.0 1.0
    $ {Y_{\rm{N_2}}} $ 0.486 0.0
    Δ/mm 0.0075 0.0075
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-12-01
  • 录用日期:  2022-04-13
  • 网络出版日期:  2022-04-14
  • 刊出日期:  2022-06-18

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