化工进展2016，Vol.35Issue(10)：3065-3071,7.DOI:10.16085/j.issn.1000-6613.2016.10.008
二维平行平板内分散气泡对液相表观黏度影响的数值研究
Numerical study on influence of dispersed bubbles on liquid-phase apparent viscosity in two-dimensional parallel plate
摘要
Abstract
Bubble liquid exists widely in various industrial fields,so the detailed understanding of physical properties of bubbly liquid is of great significance for improving the quality of products and for strengthening industrial processes. In this paper,in order to understand the influence of bubbles on the liquid-phase apparent viscosity and to explain the changing reason of the liquid-phase apparent viscosity,based on two-dimensional parallel plate model,the effect of large bubbles on the liquid-phase apparent viscosity was deeply investigated with the volume of fluid (VOF) method combined with the dynamic mesh. The effect of bubbles on the liquid-phase apparent viscosity was numerically studied in detail under the conditions with the same void fraction but different capillary numbers. The present study showed that the capillary number and the bubble volume fraction has the great effect on liquid-phase apparent viscosity. For the same volume fraction,when the capillary number is relatively large (Ca>1),the bubble injection causes the decrease of the relative viscosity of the liquid phase,and the larger the volume fraction is. The relative viscosity of the liquid phase decreases more sharper. In addition,under the same volume fraction,when the capillary number is relatively small (Ca<1),the relative viscosity of the liquid phase increases due to the addition of bubbles,and the higher the volume fraction is. The relative viscosity of the liquid phase increases more obviously.关键词
泡状液体/分散气泡/相对黏度/流体体积函数/动网格/二维平行平板Key words
bubbly liquid/dispersed bubble/relative viscosity/volume of fluid(VOF)/moving grid/two-dimensional parallel plate分类
数理科学引用本文复制引用
徐磊,庞明军..二维平行平板内分散气泡对液相表观黏度影响的数值研究[J].化工进展,2016,35(10):3065-3071,7.基金项目
国家自然科学基金（51376026）及江苏省青蓝工程项目。 （）
