化工进展2026，Vol.45Issue(5)：2607-2618,12.DOI:10.16085/j.issn.1000-6613.2025-0825
电场作用下含表面活性剂液滴界面输运及变形机理
Interface transport and deformation mechanism of surfactant-containing droplet under electric field
摘要
Abstract
Combined with the ALE(arbitrary Lagrange-Euler)method,the governing equation of multiphase flow,the governing equation of electric field and the interface transport equation of surfactant,a dynamic model of surfactant-containing droplets under electric field was established,the evolution of the distribution of electric field,flow field and surfactant interfacial concentration field during droplet deformation was clarified,and the influence of surfactant adsorption capacity and continuous phase viscosity on the uneven distribution of surfactant interface during droplet deformation was obtained.Within the studied steady-state deformation regime,the simulation results predicted by the dynamic mesh method showed excellent agreement with experimental data,validating the accuracy of the proposed model.The results showed that four symmetrical circulations were formed inside the droplets under the action of electric field,which promoted the accumulation of surfactants from the belly of the droplets to both ends of the droplets.With the increase of the adsorption ratio of surfactant(Г*>0.1),Marangoni stress gradually dominated,and the surfactant was transported in the opposite direction.The viscosity of the oil phase mainly affected the migration time and direction of the surfactant during the change process.The results of this study could provide theoretical guidance for the study of complex engineering current fluid dynamics such as electrostatic dehydration,electrostatic spray,and microfluidics.关键词
电场/液滴变形/表面活性剂/界面输运/Marangoni效应Key words
electric field/droplet deformation/surfactants/interface transport/Marangoni effect分类
能源科技引用本文复制引用
黄鑫,付亚晶,陆奕嘉,吴家桥,林宇昇,罗小明,张贺军,滕霖,江莉龙..电场作用下含表面活性剂液滴界面输运及变形机理[J].化工进展,2026,45(5):2607-2618,12.基金项目
国家自然科学基金青年科学基金(52204073) （52204073）
国家自然科学基金面上项目(22578066,52474089,22478080) （22578066,52474089,22478080）
福建省自然科学基金(2024J01284). （2024J01284）
