东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (6): 809-812.DOI: 10.12068/j.issn.1005-3026.2014.06.011

• 材料与冶金 • 上一篇    下一篇

双搅拌高效澄清萃取槽混合室均混时间的数值模拟

吕超，张子木，赵秋月，刘燕   

  1. (东北大学 材料与冶金学院， 辽宁 沈阳110819)
  • 收稿日期:2013-07-25 修回日期:2013-07-25 出版日期:2014-06-15 发布日期:2014-04-11
  • 通讯作者: 吕超
  • 作者简介:吕超(1985-)，男，辽宁锦州人，东北大学博士研究生，东北石油大学秦皇岛分校讲师；刘燕(1970-)，女，湖南湘乡人，东北大学教授.
  • 基金资助:
    国家自然科学基金资助项目(51204040，U1202274，51004033，50974035)；国家高技术研究发展计划项目(2010AA03A405，2102AA062303).

Numerical Simulation on Mixing Time of High Efficient Clarification and Extraction Tank with Double Stirring

LYU Chao， ZHANG Zimu， ZHAO Qiuyue， LIU Yan   

  1. School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2013-07-25 Revised:2013-07-25 Online:2014-06-15 Published:2014-04-11
  • Contact: ZHAO Qiuyue
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摘要： 利用CFD软件FLUENT120，采用Realizablek-ε湍流模型、Eulerian多相流模型及MorsiAlexander相间曳力系数模型，使用滑移网格法处理桨叶的旋转区域，对新型萃取槽混合室内的液-液体系的均混时间以及搅拌功率进行数值模拟.结果表明:随着搅拌转速的增大，搅拌桨消耗的功率增加，水油两相的均混时间减小.搅拌桨转速达到400r/min后，增大转速则搅拌功率继续增大，但对液-液两相均匀混合时间的影响不大.

关键词: 高效萃取槽, 均混时间, 功率, 数值模拟, 液-液两相流

Abstract: Mixing time and stirring power in the mixing room of a new type extraction tank were simulated by CFD software FLUENT 120， in which the realizable k-ε turbulence model and the Eulerian multiphase flow model were selected， the interphase drag coefficient was determined by using MorsiAlexander model， the sliding mesh method was used to process the rotation area of the blade. The results showed that with the increasing of agitation speed， the power consumption increases and the mixing time of liquidliquid system is reduced. When stirring speed was over 400r/min， the power increases continually and the mixing time does not change obviously.

Key words: efficient extraction tank, mixing time, power, numerical simulation, liquidliquid twophase flow

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