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Journal of the Southern African Institute of Mining and Metallurgy

versión On-line ISSN 2411-9717
versión impresa ISSN 0038-223X

Resumen

ZHANG, H. et al. The relationship between the aspect ratio and multi-physical fields in aluminium reduction cells. J. S. Afr. Inst. Min. Metall. [online]. 2011, vol.111, n.11, pp.787-792. ISSN 2411-9717.

The relationship between the aspect ratio and physical fields in aluminium reduction cells wase studied numerically. The aspect ratio was firstly defined and 7 kinds of 320 kA cells with different aspect ratios were put forward. By using numerical simulation, the relationship between the aspect ratio and the electric-magnetic flow fields, magnetohydrodynamic stabilities, and thermal stability was discussed. It is concluded that the electric-magnetic flow field distributions are greatly affected by the aspect ratio. From the perspective of magnetohydrodynamics stability, the larger the aspect ratio is, the more stable the cell will be. A larger aspect ratio is more beneficial for the thermal stability under the same current density.

Palabras clave : aluminium; electrolysis; aspect ratio; electric-magnetic flow fields; magnetohydrodynamics; thermal stability.

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