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基于总温探针的高精度总焓测量方法优化研究

朱新新 隆永胜 赵顺洪 杨远剑 李泽禹 赵文峰

朱新新,隆永胜,赵顺洪,等. 基于总温探针的高精度总焓测量方法优化研究[J]. 实验流体力学,2022,36(X):1-8 doi: 10.11729/syltlx20210149
引用本文: 朱新新,隆永胜,赵顺洪,等. 基于总温探针的高精度总焓测量方法优化研究[J]. 实验流体力学,2022,36(X):1-8 doi: 10.11729/syltlx20210149
ZHU X X,LONG Y S,ZHAO S H,et al. Optimization of total enthalpy measurement method based on the total temperature probe[J]. Journal of Experiments in Fluid Mechanics, 2022,36(X):1-8. doi: 10.11729/syltlx20210149
Citation: ZHU X X,LONG Y S,ZHAO S H,et al. Optimization of total enthalpy measurement method based on the total temperature probe[J]. Journal of Experiments in Fluid Mechanics, 2022,36(X):1-8. doi: 10.11729/syltlx20210149

基于总温探针的高精度总焓测量方法优化研究

doi: 10.11729/syltlx20210149
详细信息
    作者简介:

    朱新新:(1988—),男,云南保山人,硕士,助理研究员。研究方向:气动热与热防护试验测试技术。通信地址:四川省绵阳市二环路南段6号15信箱504分箱(621000)。E-mail:xinxincomplex@126.com

    通讯作者:

    E-mail:lzy@163.com

  • 中图分类号: V441

Optimization of total enthalpy measurement method based on the total temperature probe

  • 摘要: 为提高中低焓来流的总焓测量精准度,以铱铑铱热电偶为测温元件研制了一种总温探针。基于流热耦合计算模型对该探针各部件尺寸参数进行了优化设计,使得总温探针的复温率不低于0.9;计算和试验结果表明铱铑铱热电偶结点温度会随着热电偶后端面温度和屏蔽罩温度的升高而缓慢升高,导致不同测量时间段下得到的总温值不同,因此必须规定测量时间段并进行溯源校准。为此,借助一种新设计的加热器弧室总温探针,将应用于电弧风洞超声速流场的总温探针向国内仅有的亚声速流场总温校准装置进行了溯源校准。在电弧风洞中开展了总焓测量验证试验,采用基于精度极限和偏差极限的不确定度评估方法,计算了总焓测量结果的不确定度。结果表明:所研制的总温探针具有较高的总焓测量精准度,就本文试验结果而言,其重复性精度约为3%,不确定度为6.4%。
  • 图  1  总温探针结构示意图

    Figure  1.  Total temperature probe structure

    图  2  计算模型

    Figure  2.  Calculation model

    图  3  气流马赫数分布

    Figure  3.  Airflow Mach-number distribution

    图  4  流固温度分布

    Figure  4.  Fluid-solid temperature distribution

    图  7  2个总温探针的测试曲线

    Figure  7.  The test curve of two total temperature probes

    图  5  总焓测量试验照片

    Figure  5.  The total enthalpy measurement test photo

    图  6  总温探针校准过程

    Figure  6.  The process of calibrating the total temperature probe

    表  1  不同计算工况下的复温率

    Table  1.   The retemperature rate under different working conditions

    工况来流状态屏蔽罩后端面温度/K热电偶后端面温度/K是否有辐射换热热电偶结点温度/K复温率R
    1总温1403 K
    总压425 kPa
    1100110013050.930
    2绝热110013520.964
    3绝热绝热13990.997
    4550(静温)110012710.906
    5550(静温)110013350.952
    6总温2021 K
    总压159 kPa
    1700170018980.939
    7绝热170019880.984
    8绝热绝热20110.995
    9674(静温)170016780.875
    10674(静温)170019680.974
    下载: 导出CSV

    表  2  总温探针A和B的测量结果比对

    Table  2.   The test results comparison between the total temperature probe A and probe B

    来流
    状态
    电功率
    /MW
    总压
    /kPa
    H0A
    /(MJ·kg−1
    H0B
    /(MJ·kg−1
    η
    a2.781970.8790.911 1.022
    b3.972121.3481.385 1.022
    c5.262561.6311.655 1.022
    下载: 导出CSV

    表  3  总温探针A的总焓测量结果

    Table  3.   The total enthalpy measurement results based on the total temperature probe A

    试验
    车次
    电功率
    /MW
    总压
    /kPa
    T0A
    /(MJ·kg−1
    H0A
    /(MJ·kg−1
    $\overline H_{0{\rm{A}}} $
    /(MJ·kg−1
    d–12.5342414341.5381.528
    d–22.5542614611.569 1.528
    d–32.5842913801.478 1.528
    e–12.4736716791.8131.758
    e–22.5037015811.703 1.758
    e–3
    f–14.1962920652.3362.290
    f–24.2063520232.271 2.290
    f–34.1762920182.264 2.290
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-10-20
  • 录用日期:  2022-01-12
  • 修回日期:  2021-12-04
  • 网络出版日期:  2022-09-15

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