方形空间可燃气体爆燃泄爆实验及三维数值模拟研究

郭强 王明洋 高康华 赵天辉 孙松

郭强, 王明洋, 高康华, 赵天辉, 孙松. 方形空间可燃气体爆燃泄爆实验及三维数值模拟研究[J]. 爆炸与冲击, 2018, 38(5): 1099-1105. doi: 10.11883/bzycj-2017-0087
引用本文: 郭强, 王明洋, 高康华, 赵天辉, 孙松. 方形空间可燃气体爆燃泄爆实验及三维数值模拟研究[J]. 爆炸与冲击, 2018, 38(5): 1099-1105. doi: 10.11883/bzycj-2017-0087
GUO Qiang, WANG Mingyang, GAO Kanghua, ZHAO Tianhui, SUN Song. Experimental study and three-dimensional simulation of premixed combustible gas explosion venting in a rectangular cavity[J]. Explosion And Shock Waves, 2018, 38(5): 1099-1105. doi: 10.11883/bzycj-2017-0087
Citation: GUO Qiang, WANG Mingyang, GAO Kanghua, ZHAO Tianhui, SUN Song. Experimental study and three-dimensional simulation of premixed combustible gas explosion venting in a rectangular cavity[J]. Explosion And Shock Waves, 2018, 38(5): 1099-1105. doi: 10.11883/bzycj-2017-0087

方形空间可燃气体爆燃泄爆实验及三维数值模拟研究

doi: 10.11883/bzycj-2017-0087
基金项目: 

国家重点研发计划项目 2017YFC0804702

详细信息
    作者简介:

    郭强(1991-), 男, 硕士研究生

    通讯作者:

    高康华, weikang515@163.com

  • 中图分类号: O389

Experimental study and three-dimensional simulation of premixed combustible gas explosion venting in a rectangular cavity

  • 摘要: 为了研究大空间内预混可燃气体爆燃泄爆过程中的压力与火焰传播规律,在1.21 m3的方形空间内进行了不同体积分数乙烯气体和两种不同泄压面积的泄爆实验,针对泄压面积为0.18 m2、体积分数为7%的乙烯-空气预混气体爆燃泄爆过程进行了三维数值模拟研究。结果表明:不同泄爆条件下压力形式不同,小面积泄爆口开启后,压力先下降后上升且第2峰值较大,在高体积分数下超过第1峰值,大面积泄爆时第2峰值较小。数值模拟结果与实验得到的压力时程曲线趋势一致,与实验中观察到的外部火焰形态相似;泄爆口开启后引发的湍流效应,使得空间内火焰阵面变形和火焰传播速度显著加快,导致了小面积泄爆第2峰值压力较大。
  • 图  1  实验装置图

    Figure  1.  Schematic of experimental setup

    图  2  0.18 m2泄压面积时不同体积分数压力曲线

    Figure  2.  Overpressure curves for different volume fractionswith 0.18 m2 vent area

    图  3  0.55 m2泄压面积时不同体积分数压力曲线

    Figure  3.  Overpressure curves for different volume fractionswith 0.55 m2 vent area

    图  4  计算网格

    Figure  4.  Numerical mesh

    图  5  实验与数值模拟的压力曲线

    Figure  5.  Overpressure curves between experimentaland numerical results

    图  6  泄爆过程火焰传播图

    Figure  6.  Image of premixed flame propagation during explosion venting

    图  7  火焰阵面前端位置与速度

    Figure  7.  Flames speed and flame front position

    图  8  压力和火焰速度

    Figure  8.  Flames speed and overpressure

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出版历程
  • 收稿日期:  2017-03-20
  • 修回日期:  2017-06-20
  • 刊出日期:  2018-09-25

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