Instabilities of the metal surface in electrolytic alumina reduction cells
Instabilities of the metal surface in electrolytic alumina reduction cells
复制标题
电解氧化铝电解槽金属表面的不稳定性
DOI：
10.1007/bf02658630
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发表时间：
1977
期刊：
影响因子：
--
通讯作者：
Thorleif Se Le
中科院分区：
文献类型：
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作者：
Thorleif Se Le
利用计算机模型对电解槽金属表面的瞬变波进行了模拟研究。该模型是对定常流动和表面计算模型的半动力学修正，模拟结果清楚地表明，任何波一旦被某些扰动激发，就会变成沿腔体边缘旋转的瞬变波，从而导致整个金属表面的倾斜运动。解释了旋转波产生的机理，进一步证明了旋转波存在一个稳定极限，超过这个极限，旋转波被放大，而不是被抑制，从而导致不稳定的情况，称为“摇晃锅”。给出了一个简单的经验稳定性公式，揭示了决定性单元参数之间的相互关系。文中还给出了典型单元的一般估计曲线。
Transient waves on the metal surface in electrolytic cells are studied by simulation on a computer model. The model used is a semidynamic modification of a model for stationary flow and surface calculation.The simulation results clearly show that any wave once started by some disturbance, will turn into a transient wave rotating along the edge of the cell cavity, resulting in a tilting movement of the whole metal surface. The mechanism of the rotating wave is explained.It is further demonstrated that there exists a stability limit above which the rotating waves are amplified instead of being damped, leading to an unstable situation known as "shaky pot". A simple empirical stability formula is presented, showing the interrelation of the decisive cell parameters. General estimation curves for typical cells are also given.