化工学报Issue(3)：843-848,6.DOI:10.3969/j.issn.0438-1157.2014.03.011
匀强电场作用下分散相液滴的变形和破裂
Deformation and breakup of dispersed phase droplets in uniform electric field
摘要
Abstract
Through coupling hydrodynamics and electrostatics, a phase field method based on Cahn-Hilliard formulation was used to predict the deformation and breakup of dispersed phase droplets in a uniform electric field. The distribution of charge density, electric field strength and electric field force on the droplet surface as well as the distribution of flow field and electric field were studied from the micro-perspective. The micro-droplet deformation mechanism was established. The influence of electric field strength, droplet diameter and interfacial tension on the deformation was predicted by numerical simulation. The results showed that strong electric field intensity, large droplet diameter or small interfacial tension could cause larger degree of droplet deformation. The droplet mainly ruptured from its middle or the two ends. Rupture mainly depended on the physical properties of the continuous phase and dispersed phase. The above study would provide a theoretical basis for complex electric demulsification.关键词
相场方法/数值模拟/变形/破裂/匀强电场/界面/数学模型Key words
phase field method/numerical simulation/deformation/breakup/uniform electric field/interface/mathematics model分类
能源科技引用本文复制引用
梁猛,李青,王奎升,刘竞业,陈家庆..匀强电场作用下分散相液滴的变形和破裂[J].化工学报,2014,(3):843-848,6.基金项目
国家自然科学基金项目(51076007/E060203) （51076007/E060203）
中央基础研究基金项目 （）
北京市与中央高校共建项目。@@@@supported by the National Natural Science Foundation of China (51076007/E060203), the Central Basic Research Foundation and the Construction Project between Beijing and Central University （51076007/E060203）
