底吹氩气和旋转磁场复合作用对两相流动行为影响  

Effect of Argon Gas Bottom Injecting and Rotating Magnetic Field on Two Phase Flow Behavior

作　　者：王芳[1] 李宝宽[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2011年第9期1274-1277,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50904014)

摘　　要：提出利用旋转磁场作用于底吹氩气钢包冶金反应器的方法,建立了底吹氩气和旋转磁场作用下钢包冶金反应器内两相流动行为的数学模型,分析了改变吹气位置和磁场强度等参数对气泡运动行为的影响.结果表明:无旋流时,不断上升的气泡形成"倒锥形"的气柱.在旋转磁场和底吹气共同作用时,上升的气泡形成了"螺旋状气柱",这和试验结果相吻合.当吹气位置离中心的距离和磁场强度增大时,气泡在反应器内运动的路程分别呈线性和指数形式增加.The application of rotating magnetic filed on metallurgical reactor with an argon bottom injecting was proposed.The model of gas-liquid two phase flow behavior with the argon gas bottom injecting and the rotating magnetic field was established.The effect of nozzle position and magnetic field density on flow structure and gas bubble behavior of reactor was considered.The results showed that if there is only gas stirring,the shape of gas plume is the inverted cone.When the gas stirring and the rotating magnetic field are applied together,the shape of gas plume becomes the spiral.The simulation results showed a good agreement with the experiment observation.If the distance between reactor center and nozzle position and the magnetic density increase,the channel length which gas bubbles float to the free surface is prolonged in the linear and exponential form,respectively.

关 键 词：两相流 旋转磁场 底吹氩气 数值模拟 钢包冶金反应器 

分 类 号：TF769.2[冶金工程—钢铁冶金]