圆柱绕流对W/O型乳状液电聚并特性影响的研究
Electro-Coalescence Characteristics of Water-in-Oil Emulsion Droplets Under the Action of the Wake Vortex of the Flow Around a Cylinder & Electrostatic Field
孙启杰 1安贵明 1徐腾 1张岩 1王鸿雁 1陈海龙 1李涛1
作者信息
- 1. 青岛科技大学机电工程学院,青岛 266061
- 折叠
摘要
为探究圆柱绕流形成的尾涡对液滴聚并的影响,本文采用水平集方法,建立了 W/O型乳状液在圆柱绕流场中的流动模型.通过分析圆柱直径、流速、电场强度变化而引起的分散相体积分数变化,研究了绕流场对水滴聚并的作用.对不同圆柱直径下的不同流速进行了研究,结果表明当流速为1m/s时聚并效果最理想.在1m/s速度下叠加不同的电场强度,当电场强度为6 kV/cm时液滴聚并效率最高.对比流场、静电场&流场、圆柱绕流、绕流场&静电场四种物理场下的最优工况,聚并效率从大到小的顺序为:联合场＞圆柱绕流场＞静电场＞流场.
Abstract
To investigate the effect of vortices formed by flow around a cylinder on droplet coa-lescence,the flow process of W/O emulsion in the cylindrical winding field was simulated using a level set model.The changes in fluid volume fraction due to changes in cylindrical diameter,fluid velocity,and electric field strength were analyzed,and the effects of the four flow fields on droplet deformation and coalescence were studied.The results show that the oil-water separation effect is good at three velocities of 0.5,1 and 1.5 m/s.The highest droplet coalescence efficiency is achieved at 6 kV/cm by the combined effect of cylindrical winding field and electric field.
关键词
W/O型乳状液/水平集/圆柱绕流/液滴聚并Key words
water-in-oil emulsion/level set/flow around a cylinder/electric coalescence引用本文复制引用
基金项目
山东省自然科学基金(ZR2019MEE030)
山东省自然科学基金(ZR2019BEE022)
国家重点研发项目(2021YFB3401400)
国家重点研发项目(2021YFB3401401)
出版年
2024
NETL
NSTL
万方数据