现代大型铝电解槽内复杂物理场的仿真计算与优化  

Simulated computation and optimization of comprehensive physical fields in modern large-scale aluminium reduction cells

作　　者：李劼[1] 张红亮[1] 徐宇杰[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083

出　　处：《中国有色金属学报》2011年第10期2594-2606,共13页The Chinese Journal of Nonferrous Metals

基　　金：国家科技支撑计划项目(2009BAE85B00);国家自然科学基金资助项目(50874020)

摘　　要：总结了国内外在铝电解槽电热场、热应力场及电磁流场方面的研究进展,指出当前多物理场仿真计算算法的不足,介绍了最新开发的＂液（电解质）-液（铝）-气＂和＂液-气-固（颗粒）＂两类三相流模型、多物理场（电、磁、热、流、力、浓度分布场等）、磁流体稳定性和电流效率三维耦合仿真模型与算法,并提出基于多相-多场耦合仿真的大型铝电解槽结构与生产工艺综合优化方法,发现大型铝电解槽在3.7~3.9 V低电压下高效、低电耗、低排放、稳定运行的状态空间,并确立相应的工艺实现条件。The electro-thermal fields,thermal-stress fields and electro-magneto-flow fields of aluminium electrolysis cells were concluded,and the weaknesses of the current multi-physical field computation were pointed out.On the basis of this,the two kinds of latest developed ＂liquid（electrolyte）-liquid（melt metal）-gas＂ and ＂liquid-gas-solid（particles）＂ three-phase models and the 3D simulation coupling models and algorithms of multi-physical field（electric,magnetic,thermal,flow,stress and concentration distribution fields,etc）,magneto hydrodynamics（MHD） stability and current efficiency were introduced,and the comprehensive optimization of structure and production process for large-scale cells based on multiphase and multifield coupled simulation was put forward.The state space of large-scale cells steadily operating under the low voltage of 3.7？3.9 V with high current efficiency,low energy consumption and less emission was found,and the corresponding technology realizing condition was established.

关 键 词：铝电解槽 电热场 热应力场 电磁流场 数值仿真 

分 类 号：TF821[冶金工程—有色金属冶金] O441.4[理学—电磁学]