【作者】 刘浩；

【导师】 蒙培生；

【作者基本信息】 华中科技大学 ， 工程力学， 2013， 硕士

【摘要】 铝工业是高能耗产业。工业上生产铝采用电解法，铝电解过程要耗费大量的电能。在我国能源短缺、电力供应紧张的大环境下，提高铝电解槽电流效率在铝电解生产中具有重大的技术和经济意义。电解效率与电解槽运行状态息息相关，研究铝电解槽运行过程中的各物理场是提高电解效率的理论基础。对电解槽的物理场仿真分析，始于上世纪八九十年代，至今虽已发展了二十多年，但限于科技水平，全槽仿真模拟和多物理场间接耦合分析相对较少。尤其是国内，绝大部分的研究是针对单物理场或者电-热、热-力等简单的直接耦合分析，使用模型也大多为切片、1/4槽等不完全模型。如何将这些零碎不全面的研究工作综合起来，用于对铝电解槽物理场更全面更准确的计算分析，对提高铝电解槽的电流效率、降低铝工业能耗具有重要意义，也是未来电解槽仿真计算发展的必然方向。本文利用有限元软件ANSYS建立了某铝电解槽的1/4槽模型、1/2槽模型和全槽模型，对其进行了炉帮修正、电-热以及电-磁耦合分析。计算考虑了电解槽电流输入与输出两侧的电场分布差异，并使用了有限元与无限元相结合的方法模拟无限域问题，得到了更为准确的三维炉帮和温度场、磁场分布，并为电解槽槽型设计、母线设计提供了参考和优化方向。更多还原

【Abstract】 The aluminum industry is one of the energy-intensive industries. Aluminumproduction uses electrolysis method,and the process requires quite a lot of energy. Thereis technical and economic significance to improve the current efficiency of aluminumreduction cell in such an environment of energy shortage in China. It can be the theoreticalbasis to improve the current efficiency by studying the physical fields during runtime, forthe current efficiency is closely related to the running state of reduction cell.Numerical simulation of reduction cell has been developed for more than twenty yearssince the eighties and nineties, but limited by the level of science and technology,simulations of the whole cell and indirect coupling analysis are still lacking. especially thedomestic studies done on this mostly calculate a separate physical field or explore somesimple coupling analysis, and most of their models are not full-scale. So how to improvethe numerical simulation of reduction cell by synthesizing these scattered research resultshas important significance for the improvement of current efficiency and energyconsumption. It can also be the direction of numerical simulation of reduction cell.This thesis takes a aluminum cell as the research object, creates the aluminumreduction cell’s quarter model/half model and full cell model with large-scale finiteelement software ANSYS. And then, electric-thermal/electro-magnetic coupled analysisand correction analysis are carried out. In the coupled analysis,a combination of finiteelement and infinite element method is used to simulate the infinite domain, and thedifference between current input and current output are considered as well. then we got abetter3D lining, and a more accurate temperature/magnetic field. Suggestions are given tothe design of aluminum reduction cell at last.更多还原