An experimental investigation of the motion of single bubbles under a slightly inclined surface

被引：64

作者：

Perron, A. ^{[1
]}

Kiss, L. I. ^{[1
]}

Poncsak, S. ^{[1
]}

机构：

[1] Univ Quebec Chicoutimi, Dept Appl Sci, Chicoutimi, PQ G7H 2B1, Canada

来源：

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW | 2006年 / 32卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

bubble shape; downward facing surface; terminal velocity; surface inclination; drag coefficient;

D O I：

10.1016/j.ijmultiphaseflow.2006.02.001

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The movement of single air bubbles under a downward facing inclined solid surface has been investigated in motionless distilled water body. The effects of surface inclination 0 and bubble volume V on the terminal Froude number are studied in details. The bubble volume was varied in the 0.3-9 cm(3) range and the inclination angles up to 10 degrees in a gravity driven system. For a typical correlation curve of the terminal velocity UT versus the volume at a given inclination it was found that the increase Of UT with V is not monotonous and that four distinct sub-regimes, each characterized by a specific bubble shape, exist. The effect of inclination on UT is More sensitive at both low V and low 0. The different sub-regimes are explained qualitatively. In addition, the drag coefficients for moving bubble underneath a solid surface are presented. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：606 / 622

页数：17

共 28 条

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