CHINESE JOURNAL OF ENERGETIC MATERIALS
+高级检索
烟火药燃烧粒子流场的实验研究与数学模型
作者:
作者单位:

(1. 南京理工大学 能源与动力工程学院, 江苏 南京 210094; 2. 南京理工大学 化工学院, 江苏 南京 210094; 3. 南京工程学院 能源与动力工程学院, 江苏 南京 211167)

作者简介:

薛锐(1975-),男,博士研究生,从事火焰可视化研究。e-mail: xuerui@njit.edu.cn 通信联系人: 朱晨光(1967-),男,研究员,博士生导师,主要从事烟火燃烧机理与应用研究。e-mail: zcg_lnkz@163.com

通讯作者:

朱晨光(1967-),男,研究员,博士生导师,主要从事烟火燃烧机理与应用研究。e-mail: zcg_lnkz@163.com

基金项目:

国家自然科学基金资助(51076066,21207066)


Experimental Research on Flow Field and Mathematical Model for Burning Particles of Pyrotechnic Composition
Author:
Affiliation:

(1. School of Energy and Power Engineering, Nanjing University of Science & Technology, Nanjing 210094, China; 2. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; 3. School of Energy and Power Engineering, Nanjing Institute of Engineering, Nanjing 211167, China)

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    烟火药的点火能力、光辐射效率等性能与其火焰中燃烧粒子的速度分布相关。利用高速摄影仪对以高氯酸钾、镁粉和硝化棉等构成的烟火药的燃烧粒子的分布进行了实验研究, 并根据相关算法对流场进行了数学模拟。通过二值化图像处理方法对高速摄影仪摄取到的连续图片进行了粒子的跟踪统计与速度矢量的分析。通过灰度值加权质心计算法计算出每个正在燃烧粒子的运动轨迹, 并建立了正在燃烧粒子运动矢量的数学模型。结果表明:在分析烟火药燃烧粒子的重力、浮力和曳力等条件的影响下, 可以建立燃烧反应粒子的坐标与速度的粒子轨迹模型, 进而得到燃烧粒子的速度区域分布, 该模型能够较好地体现烟火药的火焰粒子的轨迹特征与火焰结构。

    Abstract:

    The ignition ability and radiant efficiency. performances for pyrotechnic composition are related to the velocity distribution of the burning particles in its flame. Experimental research on the distribution of burning particles of the pyrotechnic composition composed of potassium perchlorate, magnesium powder and nitrocellulose was performed by a high-speed camera (HSC) photography and the mathematical modeling of flow field was carried out according to the related algorithm. The tracking statistics of particles and the analysis of velocity vector to the continuous images obtained by HSC were carried out through the succession image processing methods.The motion trajectory of the burning particles was calculated by a grey value weighted centroid method and the mathematical model of of burning particle motion vector was established. Results show that under the influence of taking into account the gravity, buoyancy, drag force etc. conditions, the coordinate of burning reaction particle and the particle trajectory model of velocity can be established, and the regional distribution of the burning particles velocity is obtained. The model can reflect preferably the characteristic of trajectory of flame particle and the flame structure of pyrotechnic composition.

    参考文献
    相似文献
    引证文献
文章指标
  • PDF下载次数:
  • HTML阅读次数:
  • 摘要点击次数:
  • 引用次数:
引用本文

薛锐,许厚谦,李燕,等.烟火药燃烧粒子流场的实验研究与数学模型[J].含能材料, 2016, 24(2):118-123. DOI:10.11943/j. issn.1006-9941.2016.02.002.
XUE Rui, XU Hou-qian, LI Yan, et al. Experimental Research on Flow Field and Mathematical Model for Burning Particles of Pyrotechnic Composition[J]. Chinese Journal of Energetic Materials, 2016, 24(2):118-123. DOI:10.11943/j. issn.1006-9941.2016.02.002.

复制
历史
  • 收稿日期: 2014-12-01
  • 最后修改日期: 2015-06-26
  • 录用日期: 2015-07-16
  • 在线发布日期: 2016-01-19
  • 出版日期: 2016-01-25