Analysis Of Multiple Physical Fields In Aluminum Reduction Cell

Aluminum electrolytic cell is the core equipment of liquid aluminum output, its development and progress that represents the electrolytic aluminum technology development and innovation. Physical fields within the cell to produce more, function, evolution and interaction, directly affects the energy consumption of aluminum electrolytic production, efficiency, long life and other economic and technical index. So, establish a safe, flexible and reliable aluminum electrolytic cell more than coupling simulation model for development of high efficiency, high yield rate, low energy consumption and long life the new groove is of great significance. Aluminum electrolytic cell more than physical field coupling modeling and simulation are very complex and cumbersome. Distribution inside and outside the shapes of aluminum reduction cells, dozens of kinds of materials, media, makes the mathematical model is established using numerical calculation the preparatory work, such as add material properties, subdivision grid, applying the boundary conditions are very complex. A single physical field and coupled physics field solving difficult is different, the implementation of the steps the coupling relationship, contact phenomenon, magnetic field boundary open domain and convergence problems such as further increases the amount of computation and difficulty.In this paper, the physical model is established based on the cell data of a300ka large pre-baked anode aluminum reduction cell. Respectively established the physical model of electric field, magnetic field, flow field, and its calculation module of coupling field, due to the electromagnetic force is the main driving force of liquid aluminum circulation flow, and thus derived the turbulent flow field and the electromagnetic force field to calculate magnetic interface flows. According to different groove chamber shape aluminum liquid flow field are given, too. Study shows that the horizontal movement has significant influence on magnetic current, liquid aluminum forms the basic symmetry state. This paper is aim to get the magnetic field intensity, current density, velocity of flow quantity, etc. under normal working condition of aluminum reduction cells. Through calculation, the maximum of vertical direction of magnetic field intensity is0.0019T, the maximum velocity is20cm/s.