基于对轴对称液桥边缘轮廓拟合的液体表面张力系数测量研究
收稿日期: 2018-05-30
修回日期: 2018-09-19
网络出版日期: 2019-04-26
基金资助
教育部基础学科拔尖学生培养试验计划基金; 国家基础科学人才培养基金项目( J1210027) ; 南开大学物理基地能力提高项目
( J1103208) 资助
Liquid surface tension coefficient measurement based on the profile fitting of axisymmetric liquid bridge
Received date: 2018-05-30
Revised date: 2018-09-19
Online published: 2019-04-26
对液桥边缘进行轮廓拟合来测量液桥液体的表面张力系数的方法.搭建了一套可以拍摄液桥的边缘放大图的实验平台，利用
sobel 算子提取边缘信息的Matlab 算法，对液桥轮廓进行边缘提取，进而拟合得到液体表面张力系数，计算结果显示表面张力
系数的相对误差在5%以内.
关键词： Yang-Laplace 公式; 液桥; 边缘提取; 表面张力系数
刘逸飞, 王槿, 李文华, 惠王伟, 文小青, 张春玲 . 基于对轴对称液桥边缘轮廓拟合的液体表面张力系数测量研究[J]. 大学物理, 2019 , 38(3) : 54 . DOI: 10.16854 /j.cnki.1000-0712.180330
and surface tension of two parallel plates is studied，and the method of measuring the surface tension of the
liquid bridge by fitting profile of the liquid bridge is explored. A set of experimental platform for measuring the surface
tension coefficient by photographing the enlarged image of the liquid bridge and performing edge detection is
developed. The sobel operator is used to extract the edge information on the MATLAB platform，and the liquid
bridge profile is fitted to obtain the surface tension coefficient of liquid. Relative error is controlled within 5%.
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