Simulation of droplet topography on superhydrophobic surface  

作　　者：胡德志 WANG Bo ZHENG Yan-ping PEI Ming-de 

机构地区：[1]College of Materials Science and Engineering, Beijing University of Technology [2]Department of Mathematics and Physics, North China Institute of Science and Technology [3]Department of Foreign Language, North China Institute of Science and Technology

出　　处：《Journal of Chongqing University》2013年第2期75-80,共6页重庆大学学报（英文版）

基　　金：Funded by Beijing Natural Science Foundation (No. 2062004);National Natural Science Foundation of China (No. 50502001 and No. 60576012);the Fundamental Research Funds for the Central Universities;North China Institute of Science and Technology (No. 2011B24)

摘　　要：We established a novel droplet model (with-gravity model) to show the gravity effect of the droplet in the contact angle experiment.By using with-gravity model, we obtained a three-dimensional topography of the droplet including the height of the droplet, the shape of the baseline and the circumference of the baseline.Comparing the with-gravity model with the ideal spherical model, our model considered the measurement error caused by gravity effect in the contact angle experiment which is a key point to influence the three-dimension topography of the droplet.From the calculation of our model, we found that there were two important points to enhance the measurement error: the size of the droplet and the contact angle.With the droplet and the contact angle became larger, measurement error was obviously increased.We established a novel droplet model （with-gravity model） to show the gravity effect of the droplet in the contact angle experiment. By using with-gravity model, we obtained a three-dimensional topography of the droplet including the height of the droplet, the shape of the baseline and the circumference of the baseline. Comparing the with-gravity model with the ideal spherical model, our model considered the measurement error caused by gravity effect in the contact angle experiment which is a key point to influence the three-dimension topography of the droplet. From the calculation of our model, we found that there were two important points to enhance the＇measurement error： the size of the droplet and.the contact angle. With the droplet and the contact angle became larger; measUrement error was obviously increased.

关 键 词：contact angle droPlet gravity Yang-LaPlace equation baseline length hydrostatic pressure 

分 类 号：O35[理学—流体力学]