The properties of large bubbles rising in very viscous liquids in vertical columns

被引：19
作者：
Azzopardi, B. J. [1 ]
Pioli, L. [2 ]
Abdulkareem, L. A. [3 ]
机构：
[1] Univ Nottingham, Fac Engn, Nottingham NG7 2RD, England
[2] Univ Geneva, Sect Sci Terre & Environm, CH-1211 Geneva 4, Switzerland
[3] Univ Zakho, Fac Engn, Zakho, Iraq
来源：
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW | 2014年 / 67卷
基金：
瑞士国家科学基金会;
关键词：
Slug; Bubble column; Gas/liquid; Viscous; ELECTRICAL CAPACITANCE TOMOGRAPHY; SLUG FLOW; FLUIDIZED-BEDS; CONSTITUTIVE EQUATION; NEWTONIAN LIQUIDS; GAS/LIQUID FLOW; TAYLOR BUBBLE; GAS-BUBBLES; AIR; TUBES;
D O I：
10.1016/j.ijmultiphaseflow.2014.08.013
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Very viscous liquids (>100 Pa s) are found in form of heavy oils and polymers in industry as well as in the natural environment (silicatic magma). Little is known of their behaviour as gas bubbles up through them in vertical columns. Using advanced tomographic instrumentation, the characteristics of these flows have been quantified. It was found that: the gas mainly travels as very large bubbles which occupy a significant part of the column cross-section and that very small bubbles (similar to 100 mu m) are created and trapped within the liquid. There is a periodic rising and falling of the top surface of the gas/liquid column as the large bubbles rise to the top and burst. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：160 / 173
页数：14
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