指出广泛使用的铝电解槽电-热场分离的计算方法和电-热场弱耦合计算方法的理论缺陷，提出一种电-热场强耦合计算模型。以某420 kA铝电解槽为对象，同时应用强耦合模型与传统的弱耦合模型对其电-热场进行计算，计算结果证明了在电-热场分析中采用强耦合模型的必要性。研究结果表明：不设定熔体温度是电场和热场实现强耦合的关键，对槽内各热源进行准确描述并引入计算模型中是获得可靠的铝电解槽电-热场分布的必要条件。
The theoretical defects of the widely adopted separation calculation method and weakly coupled calculation methods for the thermal-electrical field in aluminium reduction cells were pointed out, and a strongly coupled model of thermal-electrical field was presented. The thermal-electrical field of a 420 kA aluminium reduction cell was computed by using the strongly coupled model and the conventional weakly coupled model, respectively, and the results of this comparative computation prove that adopting the strongly coupled model is necessary. The results show that not setting the temperature of the melt is the key to realize the strong coupling of the electrical field and thermal field, and that introducing the each heat source, which are exactly described, into the calculation model is requirement for obtaining the reliable distribution of the thermal-electrical field.
参考文献
| [1] | 刘业翔;李劼.现代铝电解[M].北京:冶金工业出版社,2008:310-312. |
| [2] | BRUGGEMAN J N;DANKA D J.Two-dimensional thermal modeling of the Hall-Héroult cell[A].Anaheim,CA:TMS,1990:203-209. |
| [3] | TOMASINO T;MARTIN C;WAZ E;RENAUDIER S.Numerical modeling of heat transfer around an aluminum reduction pot shell[A].Carlotte,NC:TMS,2004:433-438. |
| [4] | KISS L I;DASSYLVA-RAYMOND V.Freeze thickness in the aluminum electrolysis cells[A].New Orleans,LA:TMS,2008:431-436. |
| [5] | 李相鹏 .75kA导流型铝电解槽物理场仿真与优化[D].中南大学,2004. |
| [6] | 李劼,王志刚,张红亮,赖延清,徐宇杰.5kA级惰性阳极铝电解槽热平衡仿真[J].中国有色金属学报,2009(02):339-345. |
| [7] | DUPUIS M.Computation of aluminum reduction cell energy balance using ANSYS finite element models[A].San Antonio,TX:TMS,1998:409-417. |
| [8] | 李劼,邓星球,赖延清,刘凤琴,刘业翔.160 kA预焙铝电解槽在低分子比和低温条件下的三维电热场[J].中南大学学报（自然科学版）,2004(06):875-879. |
| [9] | 崔青玲,喻海良,田庭辽,刘相华,王国栋.铝电解槽三维电热场耦合分析[J].有色金属（冶炼部分）,2005(04):28-30. |
| [10] | Lu Dingxiong;Mao Jihong;Ban Yungang;Qi Xiquan;Yang Qingchen;Dong Hui .Development of NEUI500kA Family High Energy Efficiency Aluminum Reduction Pot (‘HEEP’) Technology[J].Light metals,2011(2011):455-460. |
| [11] | HAUPIN W E.Cathode voltage loss in aluminum smelting cells[A].New York,NY:Metall Soc of AIME,1975:339-349. |
| [12] | 李景江;邱竹贤 .铝电解槽阴极电场的计算机仿真[J].东北工学院学报,1989,10(06):591-597. |
| [13] | 杨重愚.轻金属冶金学[M].北京:冶金工业出版社,1991 |
| [14] | MCADAMS W H.Heat transmission[M].New York:McGraw-Hill,1954 |
| [15] | 邱竹贤.铝电解[M].北京:冶金工业出版社,1995:332-333. |
| [16] | SOLHEIM A.Some aspects of heat transfer between bath and sideledge in aluminum reduction cells[A].San Diego,CA:TMS,2011:381-386. |
| [17] | SEVERO D S;GUSBERTI V.A modeling approach to estimate bath and metal heat transfer coefficients[A].San Francisco,CA:TMS,2009:557-562. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%