关键词: 铝电解槽, 电解质运动, 电磁力, 阳极气体, 数值模拟

Abstract: Physical and numerical models of the electrolyte flow in aluminum reduction cells were established by means of appropriate simplification. Based on the commercial CFD software, the electrolyte flow was numerically simulated in three cases, i.e., the flow induced by electromagnetic force, the flow driven by anode gas, and the flow driven simultaneously by the above two forces, respectively. The results indicate that the electrolyte flow induced by electromagnetic force produces a large eddy pattern predominately in the horizontal direction. The electrolyte flow driven by anode gas is a local circulation around each anode. The electrolyte flow driven by the combination of the above two forces is similar to the sole anode gas driven case, which indicates that the electrolyte flow field is mainly determined by the anode gas.

Key words: aluminum reduction cells, electrolyte flow, electromagnetic force, anode gas, numerical simulation