高校化学工程学报2018，Vol.32Issue(1)：53-59,7.DOI:10.3969/j.issn.1003-9015.2017.00.051
毛细管中液液弹状流的流体力学数值模拟
Numerical Simulation on Hydrodynamics of Liquid-Liquid Slug Flow in Capillary
摘要
Abstract
With the advancement of microfabrication techniques and emergency of new materials, microcolumn liquid chromatography (or capillary liquid chromatography) has shown potential application in separation and analysis. Slug flow is one of the most common and stable flow patterns for two phase flow in capillary. Numerical simulation of liquid-liquid slug flow in capillary was studied and a T-junction empty capillary with diameter of 0.2mm was used. Commercial computational fluid dynamics (CFD) package FLUENT (Release16.2) was used to investigate the hydrodynamics of slug flow including slug length, the thickness of liquid film and slug velocity. The dependence of slug length on flow rates and other parameters like capillary number was determined. The results show that slug length increases as the flow rate of the dispersed phase increases, and it decreases as the flow rate of the continuous phase and capillary number increase. The film thickness is well predicted by available models. Correlation of slug length and slug velocity is developed based on the simulated data which has good agreement with the experimental data.关键词
毛细管液相色谱/液液弹状流/计算流体力学/流体力学Key words
microcolumn liquid chromatography/liquid-liquid slug flow/computational fluid dynamics/hydrodynamics分类
化学化工引用本文复制引用
宋洪利,王燕飞,许松林..毛细管中液液弹状流的流体力学数值模拟[J].高校化学工程学报,2018,32(1):53-59,7.基金项目
国家重点研发计划(2016YFF0203802) （2016YFF0203802）
中国检科院基本科研业务费(2016JK017). （2016JK017）
