Transient characteristics of convection and diffusion of oxygen gas in an open vertical cylinder under magnetizing and gravitational forces

被引：29

作者：

Tagawa, T

Ozoe, H

Inoue, K

Ito, M

Sassa, K

Asai, S

机构：

[1] Kyushu Univ, Inst Adv Mat Study, Kasuga, Fukuoka 8168580, Japan

[2] Nagoya Univ, Dept Mat Proc Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan

来源：

CHEMICAL ENGINEERING SCIENCE | 2001年 / 56卷 / 14期

关键词：

oxygen gas; magnetizing force; gravitational force; numerical computation;

D O I：

10.1016/S0009-2509(01)00105-1

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A simplified model was derived for magnetizing force convection of oxygen gas and solved for transient characteristics of oxygen gas in a vertical open pipe. Oxygen gas in the cylindrical pipe initially flows out downward since oxygen gas is heavier than air. However, the magnetizing force works to attract the oxygen gas in the lower half of the vertical pipe, and the oxygen gas rises back to the central part of the pipe where the magnetic field is strongest. After a long time, all the oxygen gas in the pipe is replaced with air due to diffusion. This model represented moderately well the transient concentration of oxygen gas measured experimentally in a similar system. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：4217 / 4223

页数：7

共 17 条

[1] Quantitative analysis of air convection caused by magnetic-fluid coupling [J].