Elongated bubble shape in inclined air-water slug flow

被引：20
作者：
Roitberg, E. [1 ,2 ]
Barnea, D. [1 ]
Shemer, L. [1 ]
机构：
[1] Tel Aviv Univ, Sch Mech Engn, IL-69978 Tel Aviv, Israel
[2] Technion, Dept Civil & Environm Engn, Haifa, Israel
来源：
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW | 2016年 / 85卷
基金：
以色列科学基金会;
关键词：
LIQUID SLUG; PRESSURE-DROP; LONG BUBBLES; INTERMITTENT FLOW; VELOCITY-FIELD; VERTICAL TUBE; 2-PHASE FLOW; PIPES; MODEL; MOTION;
D O I：
10.1016/j.ijmultiphaseflow.2016.05.011
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The shape of elongated bubbles in upward inclined air-water slug flow was studied experimentally by quantitative measurements of the cross sectional distribution of the phases within the pipe, using a wire mesh sensor. Ensemble-averaged shapes of elongated bubbles were determined for a wide range of gas and liquid flow rates, as well as for different pipe inclination angles. The elongated bubble nose can be characterized by an annular domain where liquid is present above the gas. The effect of gas and liquid flow rates, as well as of the pipe inclination angle on the bubble shape (front and tail) is studied. A simplified theoretical model is proposed to determine the bubble front shape. The model predictions compare favorably with the experimental results. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：76 / 85
页数：10
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