爆轰管内氢氧爆炸过程与碳-铁纳米材料生长研究

赵铁军 刘翼 吴永翔 闫鸿浩 吴林松

赵铁军, 刘翼, 吴永翔, 闫鸿浩, 吴林松. 爆轰管内氢氧爆炸过程与碳-铁纳米材料生长研究[J]. 爆炸与冲击. doi: 10.11883/bzycj-2023-0404
引用本文: 赵铁军, 刘翼, 吴永翔, 闫鸿浩, 吴林松. 爆轰管内氢氧爆炸过程与碳-铁纳米材料生长研究[J]. 爆炸与冲击. doi: 10.11883/bzycj-2023-0404
ZHAO Tiejun, LIU Yi, WU Yongxiang, YAN Honghao, WU Linsong. Study on hydrogen-oxygen detonation process and the growth of carbon-iron nanomaterials in the detonation tube[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2023-0404
Citation: ZHAO Tiejun, LIU Yi, WU Yongxiang, YAN Honghao, WU Linsong. Study on hydrogen-oxygen detonation process and the growth of carbon-iron nanomaterials in the detonation tube[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2023-0404

爆轰管内氢氧爆炸过程与碳-铁纳米材料生长研究

doi: 10.11883/bzycj-2023-0404
基金项目: 国家自然科学基金(11672068, 12172084);河南省自然科学基金(232300420341);河南省科技攻关项目(242102230015)
详细信息
    作者简介:

    赵铁军(1990- ),男,博士,讲师,tiejun_zhao@henu.edu.cn

    通讯作者:

    闫鸿浩(1974- ),男,博士,教授,yanhh@dlut.edu.cn

  • 中图分类号: O389

Study on hydrogen-oxygen detonation process and the growth of carbon-iron nanomaterials in the detonation tube

  • 摘要: 为研究气相爆轰合成碳-铁纳米材料的爆炸过程,采用氢氧爆炸试验与数值模拟相结合的方式研究了不同氢氧摩尔比(2∶1、3∶1和4∶1)对爆轰参数(爆速、爆温、爆压)峰值时程曲线与碳-铁纳米材料形貌的影响。研究表明:爆轰管内氢氧爆炸包括爆轰波的传播与燃烧波的衰减两个过程,且氢氧摩尔比对爆速、爆温、爆压的峰值时程曲线影响十分显著。随着氢氧摩尔比的提高,爆轰波的爆速、爆温、爆压及其衰减速率均呈减小趋势。氢氧摩尔比通过影响爆轰波的传播与衰减而作用于碳-铁纳米材料形貌的生长。零氧平衡时,样品为碳包铁纳米颗粒,随着氢氧摩尔比的提高,样品中碳纳米管的数量逐渐增多。调整氢氧摩尔比可实现对爆轰波传播与衰减过程的控制,达到气相爆轰控制性制备特定形貌的碳-铁纳米材料目的。
  • 图  1  气体爆炸合成碳-铁纳米材料所用爆轰管示意图

    Figure  1.  Schematic diagram of the detonation tube used in the synthesis of carbon-iron nanomaterials by gas explosion

    图  2  密闭管道的几何模型

    Figure  2.  Geometry of a closed tube

    图  3  几何模型的网格划分

    Figure  3.  Meshing of geometry

    图  4  氢氧摩尔比为2∶1条件下网格尺寸对速度时程曲线的影响

    Figure  4.  Effect of mesh size on the time-history curves of velocity when molar ratios of hydrogen-oxygen is 2∶1

    图  5  工况1下爆轰波的传播衰减高速摄影图像与爆速时程曲线

    Figure  5.  The propagation attenuation of the detonation wave, the high-speed photographic image and the time history curve of the detonation velocity under the working condition S1,

    图  6  不同时刻峰值的速度云图

    Figure  6.  Velocity contour of peak values at different times

    图  7  不同工况下观测点速度、温度和压强的峰值时程曲线

    Figure  7.  Velocity, temperature and pressure history curves at observation points under different working conditions

    图  8  不同工况下样品的 TEM 图像

    Figure  8.  TEM image of the sample under different working conditions

    图  9  不同工况下爆轰波传播到管道中心位置的时间

    Figure  9.  The time required for the detonation wave to propagate to the center of the tube under different working conditions

    表  1  不同网格尺寸的网格数量及其爆速和误差

    Table  1.   The number of meshes of different mesh sizes and their detonation velocity and error

    最大网格尺寸/mm网格数量爆速/(m∙s−1误差/%
    1.0104 492197210.36
    2.027 596187614.73
    2.517 676182017.27
     注:爆速为爆轰波第1次经过观测点时的速度。
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  • 收稿日期:  2023-11-10
  • 修回日期:  2023-12-04
  • 网络出版日期:  2024-03-26

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