油相中荷电液滴变形和破碎特性的实验研究  

Experimental study on the deformation and breakup characteristics of charged droplets in oil phase

作　　者：王东保 王军锋[1] 霍元平[1] 刘海龙[1] 王晓英[1] WANG Dongbao;WANG Junfeng;HUO Yuanping;LIU Hailong;WANG Xiaoying(School of Energy and Power Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China)

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013

出　　处：《中国科学院大学学报（中英文）》2020年第2期274-280,共7页Journal of University of Chinese Academy of Sciences

基　　金：国家自然科学基金(51761145011);江苏省研究生科研与实践创新计划项目(KYCX17_1776);江苏省自然科学基金(BK20150511,BK20160517)资助。

摘　　要：基于显微高速数码摄像技术对不相溶醇油体系中醇相荷电液滴的破碎行为演变过程进行可视化研究。精确捕捉不同场强下荷电液滴在油相中的显微形貌特征,得到荷电液滴在不同工况下的变形破碎过程和演变细节,探究荷电液滴在不同破碎模式下的形成机理。定量分析荷电液滴尺寸与电压和流量的关系,得到液滴粒径累计分布规律和液滴粒径分布的Rosin-Rammler函数。研究结果表明,随电场强度增加,液滴尺寸迅速下降,粒径分布均匀性提高。电场使相间作用效果明显增强。The evolution process of charged droplet breakup in immiscible oil phase was visualized using micro-high-speed digital camera technology.The micro-morphology characteristics of charged droplets in oil phase under different electric field intensities were accurately captured.The deformation and breakup processes of charged droplets under different conditions were analyzed,and the formation mechanisms of charged droplets in different breakup modes were explored.The relationships of the charged droplet size with voltage and flow rate were quantitatively analyzed,while the cumulative distribution rules and Rosin-Rammler function of the droplet size distribution were obtained.The results indicate that the droplet size decreases rapidly with the electric field intensity while the uniformity of particle size distribution increases.Electric field strongly enhances the interphase interaction.

关 键 词：电场 荷电液滴 破碎 粒径分布 显微高速摄像 液-液相分散 

分 类 号：TK018[动力工程及工程热物理]