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搅拌萃取塔内单相流动不同雷诺平均湍流模型结果的比较

尤学一a; H.J.Bartb   

  1. a School of Environmental Science and Engineering, Tianjin University, Tianjin 300072,
    China
    b Lehrstuhl fur Thermische Verfahrenstechnik, Universitat Kaiserslautern, Postfach 3049,
    67653 Kaiserslautern, Germany
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2003-06-28 发布日期:2003-06-28
  • 通讯作者: 尤学一

Comparison of the Reynolds-averaged Turbulence Models on Single Phase Flow Simulation in
Agitated Extraction Columns

YOU Xueyia; H.J.Bartb   

  1. a School of Environmental Science and Engineering, Tianjin University, Tianjin 300072,
    China
    b Lehrstuhl fur Thermische Verfahrenstechnik, Universitat Kaiserslautern, Postfach 3049,
    67653 Kaiserslautern, Germany
  • Received:1900-01-01 Revised:1900-01-01 Online:2003-06-28 Published:2003-06-28
  • Contact: YOU Xueyi

PDF (PC)

295

被引次数

3

摘要： The flow field of liquid phase (water) of agitated extraction columns is simulated with the
help ofcomputational fluid dynamics (CFD). Four kinds of Reynolds-averaged turbulence
models, i.e. the standard k-εmodel, the RNG (renormalization group) k-ε model, the
realizable k-ε model and the Reynolds stress model, arecompared in detail in order to
judge which is the best model in terms of the accuracy, less CPU time and memoryrequired.
The performance of the realizable k-ε model is obviously improved by reducing the model
constant fromc2 ＝ 1.90 to c2 ＝ 1.61. It is concluded that the improved realizable k-ε
model is the optimal model.

关键词: agitated extraction column;turbulence models;computational fluid dynamics

Abstract: The flow field of liquid phase (water) of agitated extraction columns is simulated with the
help ofcomputational fluid dynamics (CFD). Four kinds of Reynolds-averaged turbulence
models, i.e. the standard k-εmodel, the RNG (renormalization group) k-ε model, the
realizable k-ε model and the Reynolds stress model, arecompared in detail in order to
judge which is the best model in terms of the accuracy, less CPU time and memoryrequired.
The performance of the realizable k-ε model is obviously improved by reducing the model
constant fromc2 ＝ 1.90 to c2 ＝ 1.61. It is concluded that the improved realizable k-ε
model is the optimal model.

Key words: agitated extraction column, turbulence models, computational fluid dynamics

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