电场作用下液液系统中液滴变形的计算模型  

Numerical calculation model on discrete droplet deformation in liquid-liquid system under electric field

作　　者：张军[1,2] 崔玉敏 何宏舟[1,2] ZHANG Jun;CUI Yu-min;HE Hong-zhou(School of Marine Equipment and Mechanical Engineering,Jimei University,Xiamen 361021,China;Fujian Province Key Laboratory of Energy Cleaning Utilization and Development,Jimei University,Xiamen 361021,China)

机构地区：[1]集美大学海洋装备与机械工程学院,福建厦门361021 [2]集美大学福建省能源清洁利用与开发重点实验室,福建厦门361021

出　　处：《浙江大学学报（工学版）》2021年第7期1391-1398,共8页Journal of Zhejiang University：Engineering Science

基　　金：福建省科技计划资助项目(2017H0024).

摘　　要：基于单元变形的思路,由单元守恒方程出发,建立电场中液滴变形的数值计算模型.在此基础上,将该模型与偶极模型相耦合,提出液滴聚结的计算方法.由所建模型及计算方法,编制数值计算程序对几种参数下液滴的变形及聚结进行模拟计算.结果表明,所建模型对液滴变形的预测与实验结果相符较好,对液滴聚结过程的模拟与实验结果大致相符,预测的聚结时间稍低于实验值.如果进一步提高单元阻力的模化精度及单元离散精度,所建模型会有较好的适用性.所建模型可实现对液滴的扁平形变形的预测.研究结果对液滴电变形的理论分析及数值模拟具有一定的借鉴意义.Based on the idea of element deformation,a numerical calculation model on droplet deformation in the electric field was established,from the element conservation equation.The model was coupled with the dipole model,and a calculation method on droplet coalescence was also proposed.Based on the established model and calculation method,a numerical calculation program was compiled the deformation and coalescence of droplets under several parameters were simulated.Results show that the prediction of droplet deformation is in good agreement with the experiment,the prediction of droplet coalescence is roughly consistent with the experiment and the predicted coalescence time is slightly lower than the experimental value.If the modeling accuracy of element resistance and the discrete accuracy of element are further improved,the model will have better applicability.The simulation results also show that the present model can be also used to predict the oblate deformation of droplets.The work has an active role for the theoretical analysis and numerical simulation of droplet deformation.

关 键 词：液滴变形 液液系统 数值模拟 模型 液滴聚结 

分 类 号：TQ021.1[化学工程]