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逆载对管道内汽水两相流临界热流密度的影响

宋军辉 宋保银 张钊 李冈

宋军辉, 宋保银, 张钊, 等 . 逆载对管道内汽水两相流临界热流密度的影响[J]. 北京航空航天大学学报, 2017, 43(4): 842-848. doi: 10.13700/j.bh.1001-5965.2016.0331
引用本文: 宋军辉, 宋保银, 张钊, 等 . 逆载对管道内汽水两相流临界热流密度的影响[J]. 北京航空航天大学学报, 2017, 43(4): 842-848. doi: 10.13700/j.bh.1001-5965.2016.0331
SONG Junhui, SONG Baoyin, ZHANG Zhao, et al. Effect of inverse load on critical heat flux of steam-water two-phase flow in a tube[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(4): 842-848. doi: 10.13700/j.bh.1001-5965.2016.0331(in Chinese)
Citation: SONG Junhui, SONG Baoyin, ZHANG Zhao, et al. Effect of inverse load on critical heat flux of steam-water two-phase flow in a tube[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(4): 842-848. doi: 10.13700/j.bh.1001-5965.2016.0331(in Chinese)

逆载对管道内汽水两相流临界热流密度的影响

doi: 10.13700/j.bh.1001-5965.2016.0331
基金项目: 

国家自然科学基金 50576035

详细信息
    作者简介:

    宋军辉, 男, 硕士研究生。主要研究方向:矩形管道内两相流沸腾换热

    宋保银, 男, 博士, 教授, 博士生导师。主要研究方向:传热与传质

    张钊, 男, 博士。主要研究方向:两相流沸腾换热

    李冈, 男, 硕士研究生。主要研究方向:两相流沸腾换热

    通讯作者:

    宋保银, E-mail:bysong@nuaa.edu.cn

  • 中图分类号: V216

Effect of inverse load on critical heat flux of steam-water two-phase flow in a tube

Funds: 

National Natural Science Foundation of China 50576035

More Information
  • 摘要:

    利用旋转平台对逆载作用下矩形通道内汽水两相流临界换热进行了实验研究。通过改变逆载大小、入口流体过冷度、流体质量流速等参数,获得了静止和逆载作用2种状态下矩形管道内汽水两相流临界换热实验数据。实验结果表明,质量流速随着加热时间的增长而减小,进出口压差则反之;临界状态下,质量流速随着逆载、过冷度的增大而减小;进出口压差随着逆载、质量流速的增大而增大,随着过冷度的增大而减小;临界热流密度值随着逆载、质量流速、入口过冷度的增大而增大;其中逆载对临界热流密度的影响最为显著,在逆载从0g~2.5g变换范围内,临界热流密度可提高50%。

     

  • 图 1  实验系统简图

    Figure 1.  Schematic diagram of experimental apparatus

    图 2  实验段简图

    Figure 2.  Schematic diagram of test section

    图 3  壁面温度和热流密度随时间的变化

    Figure 3.  Variation of wall temperature and heat flux with time

    图 4  管道内临界沸腾状态影像

    Figure 4.  Image of critical boiling state in tube

    图 5  管道内流体压降和质量流速随时间的变化

    Figure 5.  Variation of fluid pressure drop and mass flow rate in tube with time

    图 6  质量流速随逆载的变化

    Figure 6.  Variation of mass flow rate with inverse load

    图 7  进出口压差随逆载的变化

    Figure 7.  Variation of fluid pressure difference with inverse load

    图 8  不同条件下临界热流密度的变化

    Figure 8.  Variation of critical heat flux under different conditions

    表  1  不同逆载下的加速度值

    Table  1.   Acceleration values under different inverse loads

    逆载/g 向心加速度/(m·s-2) 哥氏加速度/(m·s-2)
    0 0 0
    0.5 4.9 2.0
    1.0 9.8 2.5
    1.5 14.7 3.9
    2.0 19.6 4.1
    2.5 24.5 4.6
    下载: 导出CSV

    表  2  主要测量仪器及参数误差

    Table  2.   Main measuring instruments and parameter errors

    测量仪器 量程 精度 参数误差/%
    涡轮流量计 0~0.25 m3/h 1.0% 1.1
    压力传感器 0~1 MPa 0.5% 0.51
    Pt100热电阻 -200~420 ℃ ±0.1 ℃ 0.32
    下载: 导出CSV
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出版历程
  • 收稿日期:  2016-04-21
  • 录用日期:  2016-09-02
  • 网络出版日期:  2017-04-20

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