铝电解槽磁流体数值仿真计算研究

MHD Numerical Simulation of Aluminum Electrolytic Cell

根据磁流体力学的相关理论和铝电解槽内的磁流体特征,建立铝电解槽磁流体计算模型,利用该模型对x方向磁场作用下的二维双阳极下的磁流体流动进行数值计算,分析极距变化和磁场强度对磁流体界面波动的影响:极距的增大有利于磁流体界面波动的稳定,磁场强度增大到一定程度时会引起阳极底掌和铝液的短路,同时导致界面的剧烈波动。

The deformation of melt interface in an aluminum electrolytic cell can cause redistribution of electric current. In addition, the melt flow can lead to induced currents. Such turbulent currents are critical factors affecting interface change and melt flow in the aluminum electrolytic cell. A calculation model for the magnetic fluid in the aluminum electrolytic cell was built based on the related magnetohydrodynamic theory and the characteristics of the magnetic fluid. The model was applied to simulate the flow of the magnetic fluid under 2D double anode in the magnetic field along x direction and analyze the influences of the anode-cathode distance and the magnetic field intensity on the magnetic fluid interface fluctuation.