底吹中间包气泡运动过程的数模研究  

Numerical study of bubble motion in tundish with bottom gas blowing

作　　者：黄奥[1] 汪厚植[1] 张美杰[1] 顾华志[1] 胡永刚[1] 

机构地区：[1]武汉科技大学湖北省耐火材料与高温陶瓷重点实验室,湖北武汉430081

出　　处：《武汉科技大学学报》2008年第2期168-171,共4页Journal of Wuhan University of Science and Technology

基　　金：国家科技攻关计划资助项目(2005BA325C)

摘　　要：采用VOF模型模拟气泡在钢液中的运动过程,根据计算结果研究气泡的运动特性。结果表明,气泡外形由初始时的球形变为心形,而后逐渐变为椭球帽形;不同气量所产生气泡的直径不同,过小气量不能形成有效气幕;吹气量改变时,气泡运动轨迹也相应改变,小气量下上升轨迹呈螺旋状,中等气量呈现S状路径,较大气量时出现直线上升运动;不同位置上的气泡运动特性完全不同,这与钢液流场分布有密切关系。VOF model is employed to simulate the motion of bubble in steel liquid. It is found that the bubble changes from the sphere at the beginning to the heart shape and gradually to ellipsoidal shape. Different gas amount produces bubbles of different diameters, and the gas curtain would not be formed when the gas flow rate is too small. As the gas flow rate changes, the pathway of the bubble also changes, from spiral rising at small gas flow rate to S-shaped rising at medium rate to straight rising at comparatively large rate. The motion of bubbles at different locations vary, which is closely related to the steel liquid flow distribution.

关 键 词：中间包 气幕挡墙砖 气泡运动 数学模拟 

分 类 号：TF777.1[冶金工程—钢铁冶金]