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 (11): 1570-1573.DOI: 10.12068/j.issn.1005-3026.2014.11.012

• 材料与冶金 • 上一篇    下一篇

双搅拌高效澄清萃取槽澄清室流动特性的数值模拟

吕超，张子木，赵秋月，张廷安   

  1. (东北大学 材料与冶金学院， 辽宁 沈阳110819)
  • 收稿日期:2013-11-25 修回日期:2013-11-25 出版日期:2014-11-15 发布日期:2014-07-03
  • 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；张廷安(1960-)，男，河南周口人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51204040，U1202274)；国家高技术研究发展计划项目(2010AA03A405)；国家科技支撑计划项目(2012BAE01B02).

Numerical Simulation on Fluid Flow Characteristics of the Settler in High Efficient Clarification and Extraction Tank with Double Stirring

LYU Chao， ZHANG Zimu， ZHAO Qiuyue， ZHANG Tingan   

  1. School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2013-11-25 Revised:2013-11-25 Online:2014-11-15 Published:2014-07-03
  • Contact: ZHAO Qiuyue
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摘要： 利用商用CFD软件FLUENT120，采用Eulerian多相流模型及MorsiAlexander相间曳力系数模型耦合，对新型双搅拌澄清萃取槽澄清室流体流动特性进行数值模拟.结果表明:澄清室增加搅拌能有效缩短分散带厚度的稳定时间，能降低水相出口油相夹带值，能加速油、水两相的澄清分离.数值模拟得到的澄清室水相速度矢量图与PIV实测得到的速度矢量图趋势保持一致，进一步说明澄清室内加搅拌能有效抑制回流，提高油、水两相分离效率.

关键词: 高效萃取槽, 双搅拌, PIV, 数值模拟, 流动特性

Abstract: On the base of commercial CFD software FLUENT 120， the fluid flow characteristics of the settler in high efficient clarification and extraction tank with double stirring were simulated numerically by using Eulerian multiphase flow model and MorsiAlexander model. The results showed that the settler with stirring can effectively reduce dispersion band thickness，which make the stable time of dispersion band thickness shorter than that without stirring， and can reduce the oil content in water phase at outlet， and it shows that the appropriate stirring can accelerate the separation process for clarification. Numerical simulation result of water phase velocity vector is the same with the velocity vector measured by PIV， which further confirms that the stirring can inhibit backflow and enhance twophase separation.

Key words: efficient extraction tank, doublestirring, PIV, numerical simulation, flow characteristics

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