Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0009-2509(00)00075-0
Title: Numerical simulation of bubble-driven liquid flows
Authors: Hua, J. 
Wang, C.-H. 
Keywords: Bubble
Numerical simulation
Two-phase flow
Issue Date: 2000
Source: Hua, J., Wang, C.-H. (2000). Numerical simulation of bubble-driven liquid flows. Chemical Engineering Science 55 (19) : 4159-4173. ScholarBank@NUS Repository. https://doi.org/10.1016/S0009-2509(00)00075-0
Abstract: The governing equations of mass and momentum conservation for both continuous and dispersed phases in the bubble-driven flow are analysed by a volume-averaging technique. It is found that two additional terms could be added into the classical two-fluid model to improve the predictions of flow behaviour in the gas-phase. Firstly, the gas-phase dispersion is attributed not only to the convective transport but also to the phase diffusion caused by the non-uniform distribution of gas. Therefore, it is essential to include a diffusion term in the mass conservation equation of the gas phase. Secondly, the viscous forces were normally neglected in the momentum equation of the gas phase in previous studies. This has restricted the validity of model predictions on the gas-phase flow behaviour. Hence, the viscous force terms are included in the gas-phase momentum balance to examine the prediction on gas-phase flow characteristics. Both laminar and turbulent flows with bottom gas injection into a liquid bath have been investigated by computer simulation. For the turbulent bubble-driven liquid flows, a two-equation k-ε turbulence model is used to examine the contribution of the mean flow of liquid. Comparisons between the predictions and the literature experimental data illustrate that the present model is capable of capturing a reasonable agreement with experimental results for both the liquid and gas phases. (C) 2000 Elsevier Science Ltd. All rights reserved.
Source Title: Chemical Engineering Science
URI: http://scholarbank.nus.edu.sg/handle/10635/66714
ISSN: 00092509
DOI: 10.1016/S0009-2509(00)00075-0
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

14
checked on Dec 7, 2017

WEB OF SCIENCETM
Citations

11
checked on Nov 22, 2017

Page view(s)

29
checked on Dec 11, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.