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从研究铝电解槽铝液波动的机理出发,对铝液波动的机理进行了分类,并对每种铝液波动的不稳定性进行了详细地阐述。针对铝液波动的特点,提出了利用有限体积法求解控制方程的数值仿真方法,给出了铝液界面波动的控制方程和边界条件,模拟出行波和驻波对铝液波动的影响,对铝电解槽稳定性的设计作出了评价,对仿真结果进行了分析和讨论。仿真结果表明:320KA预焙铝电解槽的铝液波动不明显,整体表现稳定,波动周期为50秒,最大振幅为1cm;铝液界面的中部高,三个角部较低。铝液波动中存在有行波和驻波两种波,驻波出现在B侧角部,且较为稳定,行波的转播方向为从B侧向A侧。
Based on the study of the mechanism of aluminum liquid fluctuation in aluminum reduction cell, the mechanism of aluminum liquid fluctuation was classified, and the instability of each aluminum liquid was described in detail. Aiming at the characteristics of liquid aluminum fluctuation, a numerical simulation method for solving governing equations by finite volume method was proposed. The governing equations and boundary conditions of liquid aluminum interface were given. The influence of traveling wave and standing wave on liquid aluminum was simulated. The design of cell stability was evaluated and the simulation results were analyzed and discussed. The simulation results show that the aluminum liquid in the 320KA prebaked aluminum electrolytic cell does not fluctuate obviously and the overall performance is stable. The fluctuation period is 50 seconds and the maximum amplitude is 1cm. The middle of the aluminum liquid interface is high and the three corners are low. There are two types of traveling wave and standing wave in the fluctuation of molten aluminum. The standing wave appears at the corner of B side and is stable. The traveling direction of traveling wave is from side B to side A.