不同进电方式与槽膛内形的铝电解槽内流场的数值模拟  

Numerical Simulation on Flow Fields in Aluminum Reduction Cells with Different Current Risers and reeze Profile

作　　者：周萍[1] 梅炽[1] 周乃君[1] 姜昌伟[1] 

机构地区：[1]中南大学热工设备仿真与优化研究所,湖南长沙410083

出　　处：《轻金属》2002年第8期29-31,51,共4页Light Metals

摘　　要：采用k ε双方程模型封闭的Navier stokes方程描述铝电解槽内熔体的湍流流动。对于 2 0 0kA、160kA与 80kA三种不同进电方式的铝电解槽以及具有不同槽膛内形的 160kA槽 ,在磁场、热场解析的基础上 ,计算出相应工况下动量方程中的源项 ,即洛仑兹力 ,并对稳定状态下熔体的三维流场进行了数值计算。计算结果表明 ,在模拟工况条件下 ,铝液流动在 2 0 0kA槽内呈现出四个旋涡 ,在 160kA与 80kA槽内呈现出两个旋涡 ;To describe the turbulent flowing of melt in aluminum reduction cells, Navier Stokes equation with 'k ε' two equation turbulence model is adopted. For three types of different current risers, 200kA, 160kA and 80kA, and 160kA aluminum reduction cell with different freeze profile, the source. i.e. Lorentz force, in the momentum equation is calculated based on the simulating results of magnetic fields and temperature fields. Numerical calculation on three dimension steady state flow of melt is performed. The results show that, for the case of simulating mode, metal flows as the pattern of four eddies in 200kA cell and two eddies in 160kA and 80kA. The current risers and the freeze profile have a strong effect on the flow pattern of metal.

关 键 词：进电方式 槽膛内形 数值模拟 流场 湍流流动 数值计算 铝电解槽 

分 类 号：TF351[冶金工程—冶金机械及自动化]