Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (11): 1570-1573.DOI: 10.12068/j.issn.1005-3026.2014.11.012

• Materials & Metallurgy • Previous Articles     Next Articles

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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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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