|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Aluminum Reduction Technology
||Study on 3D Full Cell Ledge Shape Calculation and Optimal Design Criteria by Coupled Thermo-flow Model
||Hongliang Zhang, Ling Ran, Jinding Liang, Tianshuang Li, Kena Sun, Jie Li
|On-Site Speaker (Planned)
Based on the finite element method and enthalpy-porosity technique, a strongly coupled thermo-flow model, which could take full account of the effect of melts flow on the heat transfer and ledge formation in the cell, was built. The steady-state 3D full cell ledge shape was accurately achieved according to the model. The effects of electromagnetic forces (EMFs) distribution and vortex morphology on the ledge thickness were studied. The results show that EMFs distribution is the main factor influencing the shape of ledge while the vortex morphology mainly affects the thickness of the ledge in the vortex intersection zone. Based on this, the design criteria of EMFs were proposed to improve the uniformity and regularity of ledge, namely lowering the fluctuation of the EMFs along long axis direction of cell, reducing the EMFs absolute value difference between the cell side of upstream and downstream and designing multi-vortex flow pattern.
||Planned: Light Metals