欢迎访问过程工程学报, 今天是

›› 2003, Vol. 3 ›› Issue (4): 0-0.

• 4 •    

铝电解槽内铝液电磁搅拌流动的数值模拟

周萍,周乃君,梅炽,姜昌伟,蔡祺风   

  1. 中南大学能源与动力工程学院,湖南 长沙 410083
  • 出版日期:2003-08-20 发布日期:2003-08-20

Numerical Simulation of Electromagnetic Stirring Flow of Metal Pad in Aluminum Reduction Cells

ZHOU Ping, ZHOU Nai-jun, MEI Chi, JIANG Chang-wei, CAI Qi-feng   

  1. College of Chemistry and Molecule Engineering, Peking University, Beijing 100871, China
  • Online:2003-08-20 Published:2003-08-20

摘要: 应用标准k–e双方程模型与低雷诺数Jones–Launder k–e模型分别对3种具有不同母线配置的铝电解槽中的铝液流场进行了数值模拟,并与工业测试结果进行了比较,标准k–e方程模型略优. 对雷诺数、湍流雷诺数以及哈特曼准数的定量计算结果表明, 哈特曼准数较好地表征了电磁力对铝液湍流运动的抑制作用.

关键词: 铝电解槽, 电磁搅拌流动, 湍流雷诺数, 哈特曼准数, 数值模拟, k–e模型

Abstract: On the basis of our research results, this article introduced mechanism and conditions of direct-current arc plasma used for synthesis of nanoparticles, as well as variety, crystalline structure and property of the nanoparticles. According to our results, many kinds of nanoparticles such as metals, oxides, nitrides, carbides and hydrides can be produced by direct-current arc plasma. The mean particle sizes of nanoparticles are usually in the range from 10 to 200 nm, changing with production conditions and components. The production rate by using this method is 10 times or more larger than that by the conventional vapor evaporation method, so this method is suitable for industrial production of nanoparticles.

Key words: aluminum reduction cell, electromagnetic stirring motion, turbulent Reynolds number, Hartman number, numerical simulation, k–e model

中图分类号: