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首页> 外文会议>7th International Conference on Electromagnetic Processing of Materials >Modeling of three-phase flow and interface deformation of metal/bath in aluminum reduction cell with cathode protrusion
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Modeling of three-phase flow and interface deformation of metal/bath in aluminum reduction cell with cathode protrusion

机译：带有阴极突起的铝还原池中金属/浴的三相流和界面变形的建模

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Stabilizing the interface wave of the molten aluminum(metal)-electrolyte(bath)is beneficial to shorten the anode-cathode distance(ACD)which is critical to the energy saving.A coupled mathematical model was developed to study the impact of the novel cathode protrusion on the molten fluid motion as well as the metal-bath interface deformation.The molten fluid motion in the aluminum reduction cells is under the combined effect of the electro-magnetic forces(EMFs)and the gas bubbles generated at the anode.A transient inhomogeneous three-phase model(metal-bath-gas bubble)was established in order to calculate more accurate.The results indicate that the metal-bath interface deformation can be reduced significantly by the novel cathode protrusion which is beneficial to the electric energy saving.Besides,The EMFs decreases as a result of the optimizing of the magnetic field due to the novel cathode convex which is an important driving force for the deformation of the interface.In addition,large vortex in the metal flow field is break up into the small vortex by the cathode protrusion and then dissipated due to the viscous force and the hindering effect of the cathode protrusion.The quantity of the vortex as well as the strength of the vortex reduces significantly in the reduction cell with novel cathode protrusion.
机译：稳定铝（金属）-电解质（浴）的界面波有利于缩短阳极-阴极距离（ACD），这对节能至关重要。建立了一个耦合数学模型来研究新型阴极的影响铝还原池中的熔融流体运动是在电磁力（EMFs）和阳极产生的气泡的共同作用下发生的。建立了不均匀的三相模型（金属浴-气泡），以进行更精确的计算。结果表明，新型阴极突起可显着降低金属浴界面变形，有利于节约电能。此外，由于新型的阴极凸面而使磁场最佳化，因此电动势降低，这是界面变形的重要驱动力。金属流场中的旋涡被阴极突起分解成小涡，然后由于粘性力和阴极突起的阻碍作用而消散。旋涡的数量和强度显着降低。具有新颖阴极突起的还原电池。

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