THEORETICAL STUDY OF MOTION OF SMALL SPHERICAL AIR BUBBLES IN A UNIFORM SHEAR FLOW OF WATER

被引：2
|
作者：
Mehdi, Syed Murtuza [1 ]
Kim, Sin [2 ]
机构：
[1] Jeju Natl Univ, Dept Mechatron Engn, Cheju 690656, South Korea
[2] Chung Ang Univ, Sch Energy Syst Engn, Seoul 156756, South Korea
来源：
NUCLEAR ENGINEERING AND TECHNOLOGY | 2015年 / 47卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
Air bubbles; Couette flow; Eotvos number; Trajectories; Uniform shear; Water; SINGLE BUBBLES; RISE VELOCITY; LIFT FORCE; SHAPE; SYSTEMS; LIQUIDS; FLUID;
D O I：
10.1016/j.net.2014.11.001
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
A simple Couette flow velocity profile with an appropriate correlation for the free terminal rise velocity of a single bubble in a quiescent liquid can produce reliable results for the trajectories of small spherical air bubbles in a low-viscosity liquid (water) provided the liquid remains under uniform shear flow. Comparison of the model adopted in this paper with published results has been accomplished. Based on this study it has also been found that the lift coefficient in water is higher than its typical value in a high-viscosity liquid and therefore a modified correlation for the lift coefficient in a uniform shear flow of water within the regime of the Eotvos number 0.305 <= Eo <= 1.22 is also presented. Copyright (C) 2015, Published by Elsevier Korea LLC on behalf of Korean Nuclear Society.
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页码：126 / 134
页数：9
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