THE MODELING OF GAS-BUBBLE DRIVEN CIRCULATIONS SYSTEMS

被引：45

作者：

ILEGBUSI, OJ

SZEKELY, J

机构：

[1] Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge

来源：

ISIJ INTERNATIONAL | 1990年 / 30卷 / 09期

关键词：

air-water; gas-bubble circulation; modeling; nitrogen-steel; plume; two-phase flow;

D O I：

10.2355/isijinternational.30.731

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A mathematical model is presented of the turbulent recirculating two-phase flow in gas-stirred systems. Conservation equations are solved for each phase variables and these are connected through interaction parameters. Allowance is made both for the direct influence of bubble transport on the turbulence field and the additional generation of turbulence energy at the liquid/gas interphase. In addition, the plume shape is a direct result of the computation rather than being prescribed a priori. Computed flowfields are presented for both air-water and nitrogen-steel systems. The air-water results compare well with established measurements of gas fraction and mean velocities. The steel system results seem to suggest that gas plumes in metals may be narrower than in water. © 1990, The Iron and Steel Institute of Japan. All rights reserved.

引用

页码：731 / 739

页数：9

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