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Modeling of Three-Phase Flow and interface deformation of Metal/Bath in Aluminum Reduction Cell With Cathode Protrusion

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Journal of Iron and Steel Research International 2012年第S1期19卷 59-62页

作者： WANG Qiang WANG Fang LI Bao-kuan FENG Nai-xiang School of Materials and Metallurgy Northeastern University

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 *** molten fluid motion in the aluminum reduction ceils 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 *** results indicate that the metal-bath interface deformation can be reduced significantly by the novel cathode protrusion which is beneficial to the electric energy ***,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 *** 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 *** quantity of the vortex as well as the strength of the vortex reduces significantly in the reduction cell with novel cathode protrusion.

关键词： aluminum reduction cell novel cathode protrusion inhomogeneous three-phase flow interface deformation electro-magnetic forces vortex

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Analytical Solution of Thermocapillary Flow in Cylindrical Annuli with Curved Free Surface

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Journal of Thermal Science 2020年第1期29卷 260-267页

作者： LIU Jia PENG Lan Key Laboratory of Low-Grade Energy Utilization Technologies and Systems of Ministry of Education College of Energy and Power Engineering Chongqing University

In this paper we consider thermocapillary flow with interface deformation in cylindrical annuli subjected to lateral temperature *** on the assumption that Reynolds,Marangoni and capillary numbers are very small,we expanded the governing equations in terms of a small parameter,and the zeroth-order one is the Stokes problem,which can be analytically solved by use of separation of variables *** are obtained for the zeroth-order fluid and thermal fields as well as the first-order interfacial ***,temperature distributions and interface shapes are presented and the influence of aspect ratios is investigated.

关键词： thermocapillary flow analytical solution interface deformation

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