静电感应驱动液滴运动的实验与数值模拟研究  

Experimental and numerical simulation study of droplet motion driven by electrostatic induction

作　　者：骆勇舟 厉自奇 代如成 王中平[1,2] 孙晓宇[1,2] 张增明 LUO Yong-zhou;LI Zi-qi;DAI Ru-cheng;WANG Zhong-ping;SUN Xiao-yu;ZHANG Zeng-ming(School of Physical Sciences,University of Science and Technology of China,Hefei,Anhui 230026,China;Conter of Physical Experiments,University of Science and Technology of China,Hefei,Anhui 230026,China)

机构地区：[1]中国科学技术大学物理学院,安徽合肥230026 [2]中国科学技术大学物理实验教学示范中心,安徽合肥230026

出　　处：《大学物理》2025年第1期96-100,共5页College Physics

基　　金：中国科学技术大学校级重点教学研究项目(2024xjyxm031);教学研究项目(2023xxskc06)资助。

摘　　要：本文利用静电感应效应实现了操控液滴的拖动与加速运动.通过研究液滴的位置随速度变化,得到液滴与基底间的摩擦系数为0.008,以及液滴与周围环境间的粘滞系数为0.028 kg/(m·s).利用数值模拟方法,计算了液滴受到的电场力以及液滴的运动过程.在400 V下,液滴先加速后减速,并在针尖电极正下方停止运动;在1000 V下,液滴加速运动,被针尖电极强烈吸引与针尖电极相触碰,模拟计算与实验结果均符合较好.In this paper,the drag and acceleration motions of droplets have been achieved by using electrostatic induction.By studying the velocity of the droplet motion,the friction coefficient between the droplet and the substrate is obtained as 0.008,as well as the viscous coefficient between the droplet and the surrounding is 0.028 kg/(m·s).Moreover,the electric field force on the droplet and the process of the droplet's motion are calculated by numerical simulations.At 400 V,the droplet firstly accelerates and then decelerates,and stops moving under the tip electrode.At 1000 V,the droplet accelerates dramatically and touches the tip electrode.The simulations are in good agreement with that of experiments.

关 键 词：静电感应 液滴 水平运动 数值模拟 

分 类 号：O3-5[理学—力学]