两模块装药点传火过程及药粒散布特性

陈安 余永刚

陈安, 余永刚. 两模块装药点传火过程及药粒散布特性[J]. 爆炸与冲击, 2021, 41(7): 072301. doi: 10.11883/bzycj-2020-0215
引用本文: 陈安, 余永刚. 两模块装药点传火过程及药粒散布特性[J]. 爆炸与冲击, 2021, 41(7): 072301. doi: 10.11883/bzycj-2020-0215
CHEN An, YU Yonggang. Ignition process and propellant grains distribution of the two-module charge[J]. Explosion And Shock Waves, 2021, 41(7): 072301. doi: 10.11883/bzycj-2020-0215
Citation: CHEN An, YU Yonggang. Ignition process and propellant grains distribution of the two-module charge[J]. Explosion And Shock Waves, 2021, 41(7): 072301. doi: 10.11883/bzycj-2020-0215

两模块装药点传火过程及药粒散布特性

doi: 10.11883/bzycj-2020-0215
基金项目: 国家自然科学基金(52076111)
详细信息
    作者简介:

    陈 安(1995- ),女,博士研究生,chenan1119@163.com

    通讯作者:

    余永刚(1963- ),男,教授,博士生导师,yygnjust801@163.com

  • 中图分类号: O381

Ignition process and propellant grains distribution of the two-module charge

  • 摘要: 模块装药点传火过程中药粒堆积形态对膛内起始压力波特性有重要影响,而模块装药点传火过程中药盒破裂后药粒飞散过程决定了药粒最终堆积形态。为此设计了模块装药可视化点传火模拟试验装置,通过高速摄像系统,观测不同初始装填位置的两模块装药点传火、药盒破裂及药粒散布过程。试验结果表明,两模块初始装填位置远离底火端且两药盒装填间距增大时,药室内传火时间变长,两个模块药盒燃烧更充分,模块盒的破裂面增大。点传火试验结束后,药室内模拟药粒散布在以底火侧端面中心为起点的轴向195~500 mm区域。其中,药粒主要分布于药室右侧陡坡状堆积区域。基于试验建立了模块装药点传火过程中药盒破裂后药粒散布的三维非稳态气固两相流模型,并进行了模拟计算。计算得到的最终药粒散布与试验测得结果基本吻合,验证了模型的合理性。
  • 图  1  可视化点传火试验装置示意图

    Figure  1.  Schematic diagram of an visual experimental device for ignition and flame propagation

    图  2  单元模块的组成

    Figure  2.  Composition of the unit module

    图  3  点传火试验中火焰传播过程(工况1)

    Figure  3.  Flame propagation process in the ignition and flame spreading test under working condition 1

    图  4  点传火试验中火焰传播过程(工况2)

    Figure  4.  Flame propagation process in the ignition and flame spreading test under working condition 2

    图  5  点传火过程中模块1运动序列(工况2)

    Figure  5.  Sequence diagrams of the movement of module 1 in the ignition and flame spreading process under working condition 2

    图  6  模块装药点传火过程中模块1运动规律

    Figure  6.  Movement law of module 1 in the ignition and flame spreading process of the modular charge

    图  7  不同工况下模块装药点传火过程中压力随时间的变化

    Figure  7.  Changes of pressure with time in the ignition processes of the modular charge under different work conditions

    图  8  点传火过程结束后药粒沿药室轴向的分布(工况2)

    Figure  8.  Distribution of propellant grains along theaxial direction of the chamber after ignition and flame spreading under working condition 2

    图  9  模拟模型示意图

    Figure  9.  Simulation model

    图  10  不同网格尺寸计算得到的监测点C处温度

    Figure  10.  Temperature at monitoring point C calculated by using different grid sizes

    图  11  药室内的药粒运动速度及位置分布

    Figure  11.  Movement velocity and distribution of propellant grains in the charge chamber

    图  12  终态药粒散布正视图

    Figure  12.  Front view of propellant grain distribution

    图  13  模拟与试验中陡坡状药粒分布对比

    Figure  13.  Comparison of steep slope distributions of propellant grains between simulation and test

    图  14  陡坡状堆积药粒堆积密度分布

    Figure  14.  Propellant grain density distribution

    表  1  模块药盒组合装填参数

    Table  1.   Filling parameters of the modular cartridge

    工况X1/mmL/mmm1/gm2/gm3/g
    1401014.220600
    2605014.220600
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-06-28
  • 修回日期:  2020-10-09
  • 网络出版日期:  2021-06-04
  • 刊出日期:  2021-07-05

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