320kA预焙铝电解槽电磁场分布计算与优化

利用ANSYS电磁场有限元法,建立了320 kA预焙铝电解槽三维电磁场有限元模型,计算了铝电解槽内的电场分布及磁场分布,计算结果与实测结果相吻合,验证了该模型的正确性.在此基础上提出了一种新型电解槽结构,并应用参数化设计语言（APDL）建立该结构的电磁场计算模型,以磁场为目标对该结构进行了整体优化.最终优化后电磁场分布表明：该结构铝电解槽能减小铝液层水平电流,磁场分布对称性好,有利于改善槽内铝液的流动状态,具备较大的节能潜力.

Computation and optimization of electromagnetic field distribution of 320 kA prebaked aluminum reduction cells

Three dimensional（3D） finite element model of 320kA prebaked aluminum reduction cells for calculating its electromagnetic field are set up by finite element method based on ANSYS program.The electromagnetic field distribution is obtained and the computation results is consistent with the measured data,and the model accuracy is verified.A novel cell structure is proposed and the field calculation model with the magnetic field as the goal of the overall optimization of the structure through the application of parametric design language（APDL） is established.The electromagnetic field distribution from the final optimization of the aluminum reduction cells show that the horizontal currents are smaller and magnetic field distributes more symmetrically which are conducive to improving the flow of the molten aluminum tank status with a large energy saving potential.