摘要
基于Yang-Laplace公式与液桥平均曲率的关系,研究两平行板间液桥的形貌与表面张力系数的关系,探索出通过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.
Based on Yang-Laplace formula and mean curvature, the relationship between the surface appearance 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%.
引文
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