欢迎访问过程工程学报, 今天是

›› 2011, Vol. 11 ›› Issue (1): 15-19.

• 流动与传递 • 上一篇    下一篇

改进Intermig桨种分槽搅拌性能的数值模拟

赵洪亮 张廷安 张超 刘燕 赵秋月 王淑婵 豆志河   

  1. 东北大学材料与冶金学院多金属共生矿生态化利用教育部重点实验室 东北大学材料与冶金学院 沈阳铝镁设计研究院 东北大学材料与冶金学院 东北大学材料与冶金学院 东北大学材料与冶金学院 东北大学 材料与冶金学院
  • 收稿日期:2011-03-07 修回日期:1900-01-01 出版日期:2011-02-20 发布日期:2011-02-20
  • 通讯作者: 张廷安

Numerical Simulation of Mixing Performance in Seed Precipitation Tank with an Improved Intermig Impeller

ZHAO Hong-liang ZHANG Ting-an ZHANG Chao LIU Yan ZHAO Qiu-yue WANG Shu-chan DOU Zhi-he   

  1. School of Materials and Metallurgy of Northeastern University School of Materials & Metallurgy，Northeastern University Shenyang Shenyang Aluminum & Magnesium Engineering & Research Institute School of Materials & Metallurgy，Northeastern University Shenyang School of Materials & Metallurgy，Northeastern University Shenyang School of Materials & Metallurgy，Northeastern University Shenyang Key Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University
  • Received:2011-03-07 Revised:1900-01-01 Online:2011-02-20 Published:2011-02-20
  • Contact: ZHANG Ting-an

PDF

摘要： 利用商业CFD软件Fluent 12.0和并行计算系统图形工作站，对改进的Intermig桨种分槽内部流场进行了三维数值解析. 采用Realizable k-e湍流模型和欧拉-欧拉多相流模型对槽内不同桨叶离底距离C、桨叶直径D下的氢氧化铝颗粒悬浮规律以及搅拌桨功率消耗进行了模拟. 结果显示，搅拌转速一定的条件下，桨叶直径越大，越有利于颗粒悬浮，搅拌功率越大；相对最佳桨径与槽径比为0.6；过高和过低的桨叶离底距离都不利于氢氧化铝颗粒悬浮，桨叶离底距离对功率影响较小，相对最佳离底距离与桨径比为0.55.

关键词: 种分槽, 机械搅拌, 数值模拟, 氢氧化铝颗, 固液两相流

Abstract: Seed precipitation tank with a new-style improved Intermig impeller was numerically simulated by using the commercial software Fluent 12.0 on parallel computing graphic workstation. The suspension of Al(OH)3 particles and power consumption in the alumina seed precipitator under different conditions of the impeller off-bottom clearance height (C) and blade diameter (D) were numerically simulated by using realizable k-ε turbulence, Eulerian-Eulerian multiphase and multi-reference frame rotating models. The numerical simulation results showed that at a constant rotate speed, enlarging D was good for suspension of Al(OH)3 particles, but bigger D resulted in more power consumption. The optimal value of D/T was 0.6, T was the tank diameter. Too big or too small C was not conducive to the suspension of Al(OH)3 particles, and C had little effect on the stirring power. The optimal value of C/D was 0.55.

Key words: seed precipitation tank, mechanical stirring, numerical simulation, Al(OH)3 particles, solid-liquid phase flow

中图分类号: