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超临界压力航空煤油冷却的实验和数值仿真研究

刘瑞航 单勇 张靖周 谭晓茗 连文磊

刘瑞航, 单勇, 张靖周, 等. 超临界压力航空煤油冷却的实验和数值仿真研究[J]. 航空动力学报, 2026, 41(2):20240401 doi: 10.13224/j.cnki.jasp.20240401
引用本文: 刘瑞航, 单勇, 张靖周, 等. 超临界压力航空煤油冷却的实验和数值仿真研究[J]. 航空动力学报, 2026, 41(2):20240401 doi: 10.13224/j.cnki.jasp.20240401
LIU Ruihang, SHAN Yong, ZHANG Jingzhou, et al. Experimental and numerical simulation researches on supercritical pressure aviation kerosene cooling[J]. Journal of Aerospace Power, 2026, 41(2):20240401 doi: 10.13224/j.cnki.jasp.20240401
Citation: LIU Ruihang, SHAN Yong, ZHANG Jingzhou, et al. Experimental and numerical simulation researches on supercritical pressure aviation kerosene cooling[J]. Journal of Aerospace Power, 2026, 41(2):20240401 doi: 10.13224/j.cnki.jasp.20240401

超临界压力航空煤油冷却的实验和数值仿真研究

doi: 10.13224/j.cnki.jasp.20240401
详细信息
    作者简介:

    刘瑞航(1999-),男,硕士生,主要从事航空发动机传热方面的研究。E-mail:liu_ruihang@nuaa.edu.cn

    通讯作者:

    单勇(1978-),男,教授、博士生导师,博士,主要从事飞行器红外隐身和航空发动机传热方面的研究。E-mail:nuaasy@nuaa.edu.cn

  • 中图分类号: V231.1

Experimental and numerical simulation researches on supercritical pressure aviation kerosene cooling

  • 摘要:

    为了验证高热负荷下超临界压力航空煤油对金属实验段的冷却特性,通过数值模拟的方法获得了实验的相关工况,讨论了冷却水质量流量对实验段壁面内传热的影响,实验验证了冷却燃油质量流量对冷却效果的影响、实验段燃气侧壁面温度分布情况,仿真模拟了实验段入口燃气温度分布对壁面冷却效果的影响。得出如下结论:每个冷却燃油质量流量都存在一个对应的冷却水质量流量,使得实验段的水冷通道对燃油冷却的影响最小;随着冷却燃油质量流量增加,燃气侧平均温度和最高温度逐渐减小;实验数据显示,在实验段主流燃气平均温度为904 K的条件下,冷却燃油质量流量为0.09 kg/s的最大值时,实验段燃气侧壁面最高温度可降至539 K,实验测量值略高于相应位置的仿真值,仿真误差在12%以内,并将燃气侧壁面最高温度和单位面积燃气侧壁面所需的冷却燃油质量流量间的关系拟合成经验关系式;在实验段入口2200 K燃气作用下,燃气侧壁面温度先急剧降低、后略微升高,超临界压力燃油可将金属壁面温度控制在920 K以下。

     

  • 图 1  实验系统

    Figure 1.  Experimental system

    图 2  实验段上下游连接及其剖面示意图

    Figure 2.  Schematic diagram of upstream and downstream connections and their cross-sections in the experimental section

    图 3  实验段模型

    Figure 3.  Experimental section model

    图 4  实验段内冷却通道局部剖面图(单位:mm)

    Figure 4.  Partial sectional view of cooling channels in the experimental section (unit:mm)

    图 5  主流燃气温度测点位置

    Figure 5.  Location of mainstream gas temperature measurement points

    图 6  燃气侧壁面温度测点位置

    Figure 6.  Location of gas side wall temperature measurement points

    图 7  实验段仿真模型

    Figure 7.  Simulation model of the experimental section

    图 8  RP-3航空煤油在3 MPa下的物性[22]

    Figure 8.  Physical properties of RP-3 aviation kerosene at 3 MPa[22]

    图 9  网格划分示意图

    Figure 9.  Schematic diagram of grid division

    图 10  观测线位置

    Figure 10.  Position of observation line

    图 11  网格无关性验证(观测线上温度分布)

    Figure 11.  Grid independent validation (temperature distribution on observation line)

    图 12  网格无关性验证(壁面平均温度)

    Figure 12.  Grid independent validation(wall average temperature)

    图 13  网格无关性验证(壁面最高温度)

    Figure 13.  Grid independent validation (wall maximum temperature)

    图 14  观测面示意图

    Figure 14.  Schematic diagram of observation surface

    图 15  不同工况下观测面平均温度梯度

    Figure 15.  Mean temperature gradient of observation surface under different operating conditions

    图 16  平均温度$ \bar {{T}} $和最高温度$ {{T}}_{\text{max}} $随冷却燃油流量的变化

    Figure 16.  Variation of average temperature $ \bar {{T}} $ and maximum temperature $ {{T}}_{\text{max}} $ with cooling fuel flow rate

    图 17  工况1各测点温度分布

    Figure 17.  Temperature distribution at each measuring point in operating condition 1

    图 18  工况4各测点温度分布

    Figure 18.  Temperature distribution at each measuring point in operating condition 4

    图 19  工况6燃气侧各测点对应位置温度分布

    Figure 19.  Temperature distribution at corresponding positions of gas side measurement points in operating condition 6

    图 20  工况7燃气侧各测点对应位置温度分布

    Figure 20.  Temperature distribution at corresponding positions of gas side measurement points in operating condition 7

    表  1  不同冷却燃油流量对应的冷却水流量

    Table  1.   Cooling water flow rate corresponding to different cooling fuel flow rates kg/s

    流量 工况1 工况2 工况3 工况4 工况5
    $ {{q}}_{\text{o}} $ 0.09 0.08 0.07 0.06 0.05
    $ {{q}}_{\text{w}} $ 0.7 0.7 0.7 0.6 0.6
    下载: 导出CSV

    表  2  实验段入口温度均匀的工况

    Table  2.   Operating conditions with uniform inlet temperature in the experimental section

    工况编号 主流入口温度/K $ {{q}}_{\text{o}} $/(kg/s) $ {{q}}_{\text{w}} $/(kg/s)
    6 2200 0.09 0.7
    7 2200 0.06 0.6
    下载: 导出CSV
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  • 收稿日期:  2024-06-20
  • 网络出版日期:  2025-11-07

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