董连东,袁惠新,付双成,邹鑫
DONG Lian-dong,YUAN Hui-xin,FU Shuang-cheng,ZOU Xin

• 1:常州大学分离工程研究所

摘要(Abstract)：

以卧螺离心机螺旋流道内流体为研究对象,应用Fluent软件中提供的7种典型湍流模型,在相同网格条件下进行三维稳态数值模拟。模拟结果表明:RNG k-ε模型与文献值吻合性最好,其次是SST k-ω模型,Realizable k-ε模型虽然模拟结果良好,但选用时要慎重。RSM模型仅在模拟高转速时比较适合,在低转速时,偏差较大,而标准k-ε,标准k-ω,S-A模型模拟结果与文献结果偏差较大。本文结果可以为卧螺离心机流场计算中的湍流模型的选取提供参考。
In order to analyze the applicability of turbulence models for the numerical simulation of decanter centrifuges,seven different turbulence models of Fluent,a CFD software,have been used.Results show that RNG k-ε model is well consistent with the literature values,and SST k-ω model is the second choice.Realizable k-ε models appeared to be not bad,but be careful to select and application.RSM model is only adapt to the high speed but not low speed.the calculation accuracy of standard k-ε,standard k-ω and S-A are worse.The results could be used as a guide for selecting turbulence model in viscous flow calculation for decanter centrifuges.

关键词(KeyWords)： 卧螺离心机;湍流模型;数值模拟
decanter centrifuge;turbulence model;numerical simulation

Abstract:

Keywords:

基金项目(Foundation): 科技部科技型中小企业创新基金项目(08C26213200648);; 江苏省2013年度高校研究生科研创新计划资助项目(CXLX13_724)

作者(Author): 董连东,袁惠新,付双成,邹鑫
DONG Lian-dong,YUAN Hui-xin,FU Shuang-cheng,ZOU Xin

参考文献(References)：

• [1]孙启才,金鼎五.离心机原理结构与设计计算[M].北京:机械工业出版社,1987.
• [2]Giuseppe Altieri.Comparative trials and an empirical model to assess throughput indices in olive oil extraction by decanter centrifuge[J].Journal of Food Engineering,2010,97(1):46-56.
• [3]Beveridge T,Harrison J E.Juice extraction with the decanter centrifuge:sweet and sour cherries,peaches and apricots[J].Food Research International,1995,28(2):173-177.
• [4]马会民,陈汉平,苏明,等.三维引射流动数值模拟及紊流模型选择[J].上海交通大学学报,2006,40(2):326-330.
• [5]张德胜,施卫东,张华,等.不同湍流模型在轴流泵性能预测中的应用[J].农业工程学报,2012,28(1):66-71.
• [6]王福军.CFD在水力机械湍流分析与性能预测中的应用[J].中国农业大学学报,2005,10(4):75-80.
• [7]徐小龙,谢智刚,段瑞,等.端焊式套管换热器的强度计算及稳定性校核[J].压力容器,2012,29(5):26-30.
• [8]冯俊,郑源.基于CFD的轴流泵三维湍流数值模拟[J].流体机械,2012,40(11):33-36,88.
• [9]施卫东,王国涛,蒋小平,等.流固耦合作用对轴流泵内部流场影响的数值计算[J].流体机械,2012,40(1):31-34,40.
• [10]Spalart P R,Allmaras S R.A One-equation turbulence model for aerodynamic flows[R].AIAA 92-0439,1992.
• [11]Launder B E,Spalding D B.Lectures in mathematical models of turbulence[M].A cademic Press,London,1972.
• [12]李进良,李承曦,胡仁,等.精通FLUENT6.3流场分析[M].北京:化学工业出版社,2009.
• [13]Yakhot V,Orszag S A.Renormalization group analysis of turbulence1:basic theory[J].Journal of Scientific Computing,1986,1(1):1-51.
• [14]Shih T H,Liou W W,Shabbir A,et al.A new k-εeddy-viscosity model for high RSM number turbulent flows model development and validation[J].Computers Fluids,1995,24(3):227-238.
• [15]Wilcox D C.Turbulence Modeling for CFD[M].DCW Industries,Inc.,La Canada,California,1998.
• [16]SST Menter F R.Two-equation eddy-viscosity turbulence models for engineering applications[J].AIAA Journal,1994,32(8):1598-1605.
• [17]王福军.计算流体动力学分析——CFD软件原理与应用[M].北京:清华大学出版社,2004.
• [18]ГоговкоЮД,ЧубковНВА.Trans.in Chem.and Pet.Eng[J].1969,(5):447-449.
• [19]孙启才,曾凡骏.沉降离心机转鼓内流体角速度场的研究[J].流体工程,1990,(11):1-5.