肥皂膜过滤性能研究  

Study on Filtration Performance of Soap Film

作　　者：班正龙 刘佳豪 赵光菊 阳劲松 冯玉宇 刘艳辉 BAN Zhenglong;LIU Jiahao;ZHAO Guangju;YANG Jinsong;FENG Yuyu;LIU Yanhui(College of Physics,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学物理学院,贵州贵阳550025

出　　处：《大学物理实验》2023年第6期34-38,共5页Physical Experiment of College

基　　金：国家自然科学基金(12164007);贵州省本科教学内容和课程体系改革项目(2021035);2023年教育部第二批国家级一流本科课程-《大学物理》(202368);2022年贵州省普通本科高校省级“金课”-《热学》(202254);2022年贵州省普通本科高校省级“金课”-《大学物理》(202212)。

摘　　要：通过构建平面肥皂膜及正曲率肥皂膜,结合相图、高速摄像系统研究肥皂膜过滤性及玻璃颗粒贯穿肥皂膜动力学过程。由颗粒下落高度、肥皂膜直径构建的相图表明,随着颗粒直径增加,肥皂膜承重质量较大的区域而逐渐缩减且最大承重质量骤降。若颗粒下落高度、肥皂膜直径恒定,颗粒直径增加导致肥皂膜承重减少。在颗粒贯穿肥皂膜过程中,肥皂膜呈现漏斗状,逐渐收缩于颈点,最后与颗粒分离,并伴随卫星气泡产生。肥皂膜形变与韦伯数正相关,当韦伯数大于9000时,正曲率肥皂膜较易破裂。The soap film filter was realized by constructing planar soap film and positively curved soap film.The phase diagram and high-speed camera system were combined to study the filtration of soap film and the dynamic process of glass particles penetrating soap films.In the phase diagram constructed by the the falling height of glass particle and the diameter of circular soap film,the load-bearing mass of soap film decresed gradually with the increasing diameter of glass particle and the maximum load-bearing mass of soap film also precipitously dropped.When the falling height of glass particle and the diameter of the soap film remained constant,the decrease in the load-bearing mass was mainly due to the increase in the diameter of the glass particle.During the dynamic process of glass particle penetrating soap film,soap film firstly took on funnel-shaped deformation and contracted at the neck during the process of glass particle penetrating the soap film,and then ruptured from the glass particles as a satellite bubble.With the increasing Weber number,the soap film deformed severely and were more prone to rupture when the Weber number exceeding 9 000.

关 键 词：肥皂膜 韦伯数 相图 动力学过程 中国大学生物理学术竞赛 

分 类 号：O469[理学—凝聚态物理] O59[理学—电子物理学]