密闭空间瞬态液雾粒径及浓度测量实验研究

doi:10.3969/j.issn.1000-1093.2015.09.010

兵工学报 ›› 2015, Vol. 36 ›› Issue (9): 1665-1670.doi: 10.3969/j.issn.1000-1093.2015.09.010

密闭空间瞬态液雾粒径及浓度测量实验研究

王悦，白春华，李斌，刘雪岭

（北京理工大学爆炸科学与技术国家重点实验室，北京 100081）

收稿日期:2014-12-04 修回日期:2014-12-04 上线日期:2015-11-20
作者简介:王悦（1975—），女，博士研究生
基金资助:
国家自然科学基金项目（11372044）

The Experimental Study of Transient Droplets Particle Size and Concentrationin Confined Spaces

WANG Yue， BAI Chun-hua， LI Bin， LIU Xue-ling

（State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China）

Received:2014-12-04 Revised:2014-12-04 Online:2015-11-20

摘要/Abstract

摘要： 为了深入研究气-液两相云雾粒径及浓度对燃爆参数的影响，利用光全散射法原理建立一套气-液两相云雾粒径及浓度测量系统，以水为液体介质，进行了20 L球型密闭多相爆炸罐二次脉冲气动喷雾云雾粒径分布与浓度测量实验研究。通过不同气动压力与液体喷雾剂量的配比实验，获得了两组相同量级索特平均直径D₃₂（31.24 μm和46.09 μm）、粒径尺寸分布及不同浓度的数据结果。实验结果表明：两组D₃₂条件下不同设计喷雾剂量浓度与实际测量浓度均呈现线性关系；通过湍流碎裂理论推导得出可燃液体同等工况下的D₃₂，为瞬态气-液两相燃爆性能的研究提供了一种新型实验方法。

关键词: 兵器科学与技术, 粒径分布, 云雾浓度, 二次脉冲气动喷雾

Abstract: In order to study the influence of droplets particle size and concentration on the explosion parameters of the gas-liquid two-phase mist, the total light scattering detection system is established based on confined space. The water is used as the liquid medium in this experiment. The Sauter mean diameter D₃₂, droplets particle size distribution and concentration are measured in the 20 L vessel. Two sets D₃₂ (31.24 μm, 46.09 μm), droplets particle size distribution and various concentration of water/air mixtures are obtained through various mixture ration tests of pneumatic pressure and liquid dose. The results indicate that there is a linear relationship between the spray dose concentration and actual measuring concentration in the two sets of D₃₂. Furthermore, the D₃₂ of the flammable liquid in the turbulent air under the same condition is concluded by the fragment theory, and a new experimental method is proposed for the explosion parameters of the gas-liquid two-phase fuel/air mixtures.

Key words: ordnance science and technology, droplets particle size, concentration of sprays, the secondary pulse pneumatic atomization

中图分类号:

O354.1

王悦，白春华，李斌，刘雪岭. 密闭空间瞬态液雾粒径及浓度测量实验研究[J]. 兵工学报, 2015, 36(9): 1665-1670.

WANG Yue， BAI Chun-hua， LI Bin， LIU Xue-ling. The Experimental Study of Transient Droplets Particle Size and Concentrationin Confined Spaces[J]. Acta Armamentarii, 2015, 36(9): 1665-1670.

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密闭空间瞬态液雾粒径及浓度测量实验研究

The Experimental Study of Transient Droplets Particle Size and Concentrationin Confined Spaces

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