Numerical Simulation of Electrolyte Two-phase Flow Induced by Anodic Bubbles in an Aluminum Reduction Cell

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dc.contributor.author Zhou, Nai en
dc.contributor.author Xue, Y en
dc.contributor.author Chen, John en
dc.contributor.author Taylor, Mark en
dc.date.accessioned 2011-11-17T17:39:25Z en
dc.date.issued 2007 en
dc.identifier.citation Chemical Product and Process Modeling 2(2) Article 11 2007 en
dc.identifier.issn 1934-2659 en
dc.identifier.uri http://hdl.handle.net/2292/9327 en
dc.description.abstract In the production process of aluminium reduction cells, the anode bubble laden layer has several important influences on the performance of the aluminium reduction cells. Especially for a “drained cathode cell”, without the agitating of movement of the melted metal, the bath flow field could be more important. In this paper, the electrolyte two-phase flow fields were studied by using numerically simulation method based on a two-phase turbulence model combining the k - model and the Discrete Random Walk model. The results show that: the motion of the bubbles mostly exists within a thin layer under the anode, which results in inducing local electrolyte to flow around the anode in various circulation flows; the flow field in the anode-cathode space can be divided into three regions with different characters; the results also show the Driving action of bubbles is closely related to the current density, inclination of anode and the anode-cathode distance. In general, the increasing in the current density increases the electrolyte velocity and the turbulent kinetic energy. The decrease in ACD significantly enhances the uniformity of the electrolyte flow field in the anode-cathode space. The increase in anode inclination angle increases the velocity of the electrolyte in the anode-cathode space, which would be beneficial to improving the diffusion and dissolution of the alumina and reducing the resistance between the anode and cathode. en
dc.description.uri http://www.bepress.com/cppm/vol2/iss2/11 en
dc.publisher Berkeley Electronic Press en
dc.relation.ispartofseries Chemical Product and Process Modeling en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/1934-2659/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Numerical Simulation of Electrolyte Two-phase Flow Induced by Anodic Bubbles in an Aluminum Reduction Cell en
dc.type Journal Article en
dc.identifier.doi 10.2202/1934-2659.1074 en
pubs.issue 2 en
pubs.volume 2 en
dc.rights.holder Copyright: Berkeley Electronic Press en
dc.rights.accessrights http://purl.org/eprint/accessRights/OpenAccess en
pubs.subtype Article en
pubs.elements-id 87878 en
pubs.org-id Engineering en
pubs.org-id Chemical and Materials Eng en
pubs.number 11 en
pubs.record-created-at-source-date 2010-09-01 en


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