低电压大容量铝电解槽三维瞬态电-磁-流场强耦合建模及磁流体稳定性研究

项目名称： 低电压大容量铝电解槽三维瞬态电-磁-流场强耦合建模及磁流体稳定性研究

项目编号： No.51274241

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 矿业工程

项目作者： 李劼

作者单位： 中南大学

项目金额： 82万元

中文摘要： 本项目针对已有铝电解槽磁流体行为研究所用理论模型存在缺陷且适用范围存在局限性的现状，开展铝电解槽三维瞬态电-磁-流场强耦合建模及磁流体稳定性分析与优化研究。项目根据磁流体动力学原理和铝电解体系自身特点，建立三维瞬态电-磁-流场强耦合数学模型及基于该模型的磁流体稳定性分析方法，基于ANSYS平台实现三场的同步瞬态计算，通过频谱分析获得铝液-电解质界面波动特征参数；对典型低电压大容量槽的磁流体行为进行计算和分析，理论论证各种结构槽的磁流体稳定性；在系统分析槽结构及工艺参数调整对电场、磁场和流场的影响的基础上，以优化磁流体稳定性为核心，提出槽结构及对应工艺技术条件设计的若干准则。本项目研究工作可为低电压大容量铝电解槽及其运转技术的开发提供可靠的分析研究手段和基础理论依据。

中文关键词： 铝电解槽；强耦合；磁流体稳定性；槽结构；数值仿真

英文摘要： A strong-coupling mathematical model of three-dimensional transient electro-magnetic-flow fields and a corresponding analysis method of MHD stability will be built up according to the MHD theory and the feature of aluminum electrolytic system.The synchronous transient computation of electro-magnetic-flow fields will be achieved based on ANSYS software platform, and the characteristic parameters of the wave of metal-bath interface will be obtained through Spectrum analysis.The MHD behavior of the typical low-voltage large-capacity cells is calculated and analyzed, and MHD stability of the cells with various structures are also proved in theory.Finally, and aming at optimizing MHD stability,some criterion for the design of cell structure and corresponding technical condition will be put forward, based on a systematical analysis of the effect of cell structure and technical condition on electric magnetic and flow fields.This project can provide the reliable analysis means and theory foundation for the development of a low-voltage large-capacity aluminum reduction cell and its operation technology.

英文关键词： aluminium reduction cell；strong-coupling；MHD stability；structure of the cell；numerical simulation