Numerical simulation of single bubble motion in ionic liquids

被引：54

作者：

Wang, Xiaoling ^{[1
,2
]}

Dong, Haifeng ^{[1
]}

Zhang, Xiangping ^{[1
]}

Yu, Liang ^{[3
]}

Zhang, Suojiang ^{[1
]}

Xu, Yan ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China

[2] Tianjin Inst Urban Construct, Dept Fundamental Subject, Tianjin 300384, Peoples R China

[3] Washington State Univ, Dept Biol Syst Engn, Pullman, WA 99164 USA

来源：

CHEMICAL ENGINEERING SCIENCE | 2010年 / 65卷 / 22期

基金：

国家杰出青年科学基金;

关键词：

Multiphase flow; Bubble; Ionic liquids; Volume-of-fluid; Computational fluid dynamic; Bubble column; FRONT-TRACKING METHOD; RISE VELOCITY; LEVEL SET; SURFACE-TENSION; GAS-BUBBLES; FLOW; FLUID; VOF; PRESSURE; BEHAVIOR;

D O I：

10.1016/j.ces.2010.08.030

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this work a numerical simulation is studied to investigate the motion of single bubble in ionic liquids using an improved volume-of-fluid (VOF) method. In the improved method, besides the gravity and surface tension, a new drag force is added to the momentum equation in order to describe the gas-liquid interaction in the ionic liquids, which possess some special properties compared with the traditional solvents. The deformation, velocity and equivalent diameter of single bubble rising in three ionic liquids, i.e., bmimBF(4), bmimPF(6) and omimBF(4), are simulated and the calculation results agree well with the experimental data. Furthermore, the detailed velocity fields and pressure fields around the bubbles are predicted with the proposed numerical simulation model. This work is important for understanding the fluid dynamic performance of bubbles in ionic liquids, and could provide a useful tool for designing a bubble column with ionic liquids as its solvents. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：6036 / 6047

页数：12

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