泡沫铜对密闭管道内合成气爆炸特性影响的实验研究

郑凯 任佳乐 宋晨 贾千航 邢志祥

郑凯, 任佳乐, 宋晨, 贾千航, 邢志祥. 泡沫铜对密闭管道内合成气爆炸特性影响的实验研究[J]. 爆炸与冲击, 2024, 44(1): 012102. doi: 10.11883/bzycj-2023-0036
引用本文: 郑凯, 任佳乐, 宋晨, 贾千航, 邢志祥. 泡沫铜对密闭管道内合成气爆炸特性影响的实验研究[J]. 爆炸与冲击, 2024, 44(1): 012102. doi: 10.11883/bzycj-2023-0036
ZHENG Kai, REN Jiale, SONG Chen, JIA Qianhang, XING Zhixiang. Experimental study on influences of copper foam on explosive characteristics of syngas in a closed pipe[J]. Explosion And Shock Waves, 2024, 44(1): 012102. doi: 10.11883/bzycj-2023-0036
Citation: ZHENG Kai, REN Jiale, SONG Chen, JIA Qianhang, XING Zhixiang. Experimental study on influences of copper foam on explosive characteristics of syngas in a closed pipe[J]. Explosion And Shock Waves, 2024, 44(1): 012102. doi: 10.11883/bzycj-2023-0036

泡沫铜对密闭管道内合成气爆炸特性影响的实验研究

doi: 10.11883/bzycj-2023-0036
基金项目: 国家自然科学基金(51804054)
详细信息
    作者简介:

    郑 凯(1989- ),男,博士,副研究员,zk@cczu.edu.cn

    通讯作者:

    邢志祥(1967- ),男,博士,教授,xingzhixiang@cczu.edu.cn

  • 中图分类号: O382; X932

Experimental study on influences of copper foam on explosive characteristics of syngas in a closed pipe

  • 摘要: 为研究泡沫铜孔隙密度和H2体积分数对合成气爆炸特性的影响,在封闭的管道中安装了孔隙密度为15、25和40 ppi的泡沫铜,实验分析了当量比为1的合成气-空气在不同H2体积分数时的火焰结构、尖端速度和超压等参数变化规律。实验结果表明:火焰在泡沫铜上游的行为是受“郁金香”火焰形成过程的影响,泡沫铜对其没有影响。但是孔隙密度和H2体积分数的改变不仅会影响“郁金香”火焰的形成时间,还会影响变形“郁金香”火焰的形成。泡沫铜将火焰分割促使其从层流向湍流转化,对爆炸火焰传播起到加速作用。泡沫铜会引起管道内超压和火焰尖端速度的极大提升,且孔隙密度越小,H2体积分数越大,火焰穿过泡沫铜后的最大火焰尖端速度越大,压力上升幅度越大,超压峰值越高。
  • 图  1  实验系统示意

    Figure  1.  Schematic of experimental system

    图  2  不同孔隙密度的泡沫铜

    Figure  2.  Copper foams with different pore densities

    图  3  不添加泡沫铜时的火焰形态

    Figure  3.  Flame without copper foam

    图  4  $\varphi $=10%下受不同孔隙密度泡沫铜抑制的火焰形态

    Figure  4.  Flame at $\varphi $=10% and different pore densities

    图  5  $\varphi $=50%下不同孔隙密度时的火焰形态

    Figure  5.  Flame at $\varphi $=50% and different pore densities

    图  6  $\varphi $=90%下不同孔隙密度时的火焰形态

    Figure  6.  Flame at $\varphi $=90% and different pore densities

    图  7  火焰尖端速度随火焰前锋位置的变化

    Figure  7.  Measured flame tip speed as a function of flame tip location

    图  8  不同孔隙密度下的火焰速度参数

    Figure  8.  Measured flame speed parameters at different ppi

    图  9  超压(p)随时间变化

    Figure  9.  Measured overpressure (p) changing with time

    图  10  不同条件的时超压(p)与火焰前锋速度(v)的关系

    Figure  10.  Relationship between overpressure (p) and flame tip speed (v) under different conditions

    图  11  最大超压(pmax)与H2体积分数($\varphi $)的关系

    Figure  11.  Measured maximum overpressure (pmax) changing with volume fracture of H2 ($\varphi $)

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出版历程
  • 收稿日期:  2023-02-09
  • 修回日期:  2023-04-07
  • 网络出版日期:  2023-04-26
  • 刊出日期:  2024-01-11

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