Multiphase Modeling of the Fluid Dynamics in an Argon Stirred Ladle with a Slit-plug
- 作者：Zhang PengCheng Shusen
- 会议时间：2010-03-01
- 关键词：ladle metallurgy ; mathematical simulation ; multiphase flow ; VOF
- 作者单位：School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing1O0083
- 母体文献：第九届冶金工程科学论坛论文集
- 会议名称：第九届冶金工程科学论坛
- 会议地点：北京
- 主办单位：北京科技大学
- 语种：chi
摘要
A mathematical model has been developed to analyze the transient three-dimensional and three-phase flow in an argon gas bottom stirring ladle with one slit-plug.Multiphase Volume of Fluid (VOF) method is used to simulate the behaviors of slag layer.Numerical simulation was conducted to clarify the transient phenomena of gas injection into the molten steel.When argon gas is injected into molten steel in a ladle, the gas rising passage is formed near the plug, and then bubbles are generated in the molten steel.The injected gas rises to the free surface inducing a turbulent circulatory flow of the molten steel.When half of the slits are plugged, the flow pattern in the bath is the same and the velocity magnitude is a little bigger.The rising bubbles impinge on the slag intermittently and break the slag layer to create the slag eye.When the slits are plugged, the area of the slag eye becomes bigger.