高速氩气流中水滴和电子氟化液滴变形破碎的实验研究  

Experiments on Deformation and Breakup of Water and Electronic Fluoride Droplets in High-Speed Argon Stream

作　　者：熊红平 刘金宏[2] 施红辉[1] 章利特[1] 

机构地区：[1]浙江理工大学机械与自动控制学院,杭州310018 [2]中国工程物理研究院流体物理研究所冲击波物理与爆轰物理重点实验室,四川绵阳621900

出　　处：《浙江理工大学学报（自然科学版）》2017年第3期409-416,共8页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金项目(11302201);国防科技重点实验室基金项目(9140C670801150C67292)

摘　　要：在竖直激波管中实验研究了液滴在高速气流中的变形破碎现象。使用高速相机直接拍摄法以及阴影法获得了两种不同的液滴在不同气相中变形破碎的形态特征图像,定量分析了液滴位移及横向变形随时间的变化关系。结果表明:液滴的表面张力越小,液滴越容易变形破碎,且变形破碎速率越快;气液密度比越大,液滴在气相中越不稳定,液滴开始变形和破碎的时间越早,且变形破碎程度更高;液滴的横向变形最大值随着激波马赫数的增大而增大。Experiments were carried out to investigate deformation and breakup of liquid droplets in high-speed stream in a vertical shock tube. The direct high-speed camera shooting technique and shadowgraph method were used to gain the morphological characteristics of the two different types of liquid droplets in different gas phases. The relationship between the droplet displacement and lateral deformation change with time was analyzed quantitatively. The experimental results show that the smaller the surface tension of the droplet, the easier the deformation and breakup of droplets, the faster the deformation and breakup rate. The greater the gas-liquid density ratio, the more unstable the droplets in the gas phase, the earlier the droplet begins to deform and break up, the higher the degree of deformation and fracture. The maximum value of lateral deformation of the droplet increases with the increase of shock wave Mach number.

关 键 词：激波 电子氟化液 液滴 变形 破碎 氩气 

分 类 号：O359[理学—流体力学]