欢迎访问《兵工学报》官方网站,今天是 分享到:

兵工学报 ›› 2020, Vol. 41 ›› Issue (9): 1772-1782.doi: 10.3969/j.issn.1000-1093.2020.09.009

• 论文 • 上一篇    下一篇

发烟罐烟雾质量浓度时空分布特性

杨尚贤, 陈慧敏, 高丽娟, 马超, 齐斌, 邓甲昊   

  1. (北京理工大学 机电动态控制重点实验室, 北京 100081)
  • 上线日期:2020-11-18
  • 通讯作者: 陈慧敏(1973—),男,副教授,博士 E-mail:laserchm@126.com
  • 作者简介:杨尚贤(1990—), 男, 博士研究生。 E-mail: focus_ysx@163.com
  • 基金资助:
    国家自然科学基金委员会与中国工程物理研究院联合基金项目(U1630131); 国防基础科研重大项目(JCKY2016-208A005)

Spatiotemporal Distribution Characteristics of Smoke Mass Concentration of Smoke Pot

YANG Shangxian, CHEN Huimin, GAO Lijuan, MA Chao, QI Bin, DENG Jiahao   

  1. (Science and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, Beijing 100081, China)
  • Online:2020-11-18

摘要: 发烟罐是对近地激光类武器系统实施无源干扰的有效手段,研究其烟雾质量浓度时空分布特性,是准确获取激光在烟雾环境下传输特性的基础。基于离散相扩散模型,采用计算流体力学软件Fluent对一种小型发烟罐的烟雾扩散过程进行仿真模拟。分析烟雾释放后不同阶段的质量浓度时空分布特性,以及风速、质量流率等参数对烟雾扩散速度、质量浓度分布的影响规律。结果表明:无风时,烟雾在喷涌阶段呈伞状,停止喷涌后烟雾在弥散阶段呈团状并存在一个质量浓度较大的烟环;在仿真设定条件下最佳风速在2~3 m/s附近;烟雾的空间质量浓度与质量流率呈线性关系;所得成果可为下一步研究近地激光类武器系统抗烟雾干扰性能提供技术参考。

关键词: 发烟罐, 烟雾, 质量浓度, 时空分布特性, 离散相

Abstract: Smoke pot is an effective means to implement the passive interference to near-earth laser weapon system. The spatiotemporal distribution characteristics of smoke mass concentration of smoke pot is studied to accurately obtain the laser transmission characteristics in the smoke environment. Based on the discrete phase diffusion model, Fluent software is used to simulate the smoke diffusion process of a small smoke pot. The spatial and temporal distribution characteristics of smoke mass concentration at different stages after the release of smoke, as well as the influence laws of wind speed, mass flow rate and other parameters on the diffusion velocity and mass concentration distribution of smoke were analyzed. The results show that the smoke is like an umbrella during spurting when there is no wind, and when the spurting stops, the smoke is like a cloud in the diffusion stage and there is a smoke ring with high mass concentration. The optimum wind speed under the simulation conditions is around 2-3 m/s. The spatial mass concentration of smoke has a linear relationship with the mass flow rate.

Key words: smokepot, smoke, massconcentration, spatiotemporaldistributioncharacteristic, discretephase

中图分类号: