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垂直及倾斜上升管内气液两相弹状流壁面切应力的模拟 被引量:5

CFD simulation of wall shear stress in gas-liquid vertical and inclined upward slug flow
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摘要 Based on the VOF model,CFD simulations were carried out for wall shear stress in gas-liquid vertical and inclined upward slug flow.The simulation results showed that the thickness of the falling film in the vertical upward slug flow was always smaller than that in the inclined upward slug flow.In the vertical tubes,wall shear stress increased gradually from Taylor bubble nose to the falling liquid film until it became stable in the developed falling liquid film,but in the wake zone the wall shear stress appeared irregular.In the inclined tubes,the tip of the Taylor bubble nose was above the centerline of the tube and the smaller the angle,the greater the thickness of the falling liquid film.Meanwhile,for the wall shear stress of slug flow in an inclined tube,when FrTB was small,the shear stress profile of falling liquid film on the top wall fluctuated significantly,but it was smooth on the bottom wall.With increasing FrTB, the difference between the shear stress profile on the top wall and the shear stress profile on the bottom wall gradually disappeared. Based on the VOF model,CFD simulations were carried out for wall shear stress in gas-liquid vertical and inclined upward slug flow.The simulation results showed that the thickness of the falling film in the vertical upward slug flow was always smaller than that in the inclined upward slug flow.In the vertical tubes,wall shear stress increased gradually from Taylor bubble nose to the falling liquid film until it became stable in the developed falling liquid film,but in the wake zone the wall shear stress appeared irregular.In the inclined tubes,the tip of the Taylor bubble nose was above the centerline of the tube and the smaller the angle,the greater the thickness of the falling liquid film.Meanwhile,for the wall shear stress of slug flow in an inclined tube,when FrTB was small,the shear stress profile of falling liquid film on the top wall fluctuated significantly,but it was smooth on the bottom wall.With increasing FrTB, the difference between the shear stress profile on the top wall and the shear stress profile on the bottom wall gradually disappeared.
作者 贺潇 车得福
出处 《化工学报》 EI CAS CSCD 北大核心 2008年第6期1390-1395,共6页 CIESC Journal
基金 国家自然科学基金项目(50231020 10372077)~~
关键词 弹状流 壁面切应力 传质系数 计算流体动力学 slug flow wall shear stress mass transfer coefficient computational fluid dynamics
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参考文献12

  • 1Hirt C W,Nichols B D.Volume of fluid(VOF)method for the dynamics of free boundary.J.Comput.Phys.,1981,39:201-225
  • 2王志峰,刘儒勋.波前追踪(Front Tracing)方法[J].力学与实践,2000,22(3):1-14. 被引量:5
  • 3Wang Fujun(王福军).The Analysis for the Computational Fluid Dynamics(计算流体动力学分析).Beijing:Tsinghua University Press,2005
  • 4Chilton C H,Colburn A P.Mass transfer coefficients prediction from data on heat transfer and fluid friction.Ind.Eng.Chem.,1934,26:1183-1187
  • 5Youngs D L.Numerical Method for Fluid Dynamics.New York:Academic Press,1982:273-285
  • 6Bugg J D,Saad G A.The velocity field around a Taylor bubble rising in a stagnant viscous fluid:numerical and experimental results.Int.J.Multiphase Flow,2002,28:791-803
  • 7Dumitrescu D T.Stromung an einer Luftblase im seukrechteu.Rohr.Z.Angew.Math.Mech.,1943,23(3):139-149
  • 8Davies R M,Taylor G I.The mechanics of large bubbles rising through extended liquids and through liquids in tubes.Proc.Roy.Soc.Ser.A,London,1950,200:375-390
  • 9Brown R A S.The mechanics of large bubble in tube(Ⅰ):Bubble velocities in stagnant liquid.Can.J.Chem.Engng.,1965,43:217-223
  • 10Mao Z S,Dukler A E.An experimental study of gas-liquid slug flow.Exp.Fluids,1989,8:169-182

二级参考文献3

  • 1Chen S,J Comput Phys,1997年,135期,8页
  • 2Wang S L,J Comput Phys,1996年,127卷,110页
  • 3忻孝康,计算流体动力学,1989年

共引文献4

同被引文献58

  • 1荆建刚,张鸣远,陈学俊.倾斜管内气液两相上升流动流型转变的研究[J].西安交通大学学报,1994,28(5):143-150. 被引量:8
  • 2谷芳,刘春江,袁希钢,余国琮.倾斜波纹板上液膜流动的CFD研究[J].化工学报,2005,56(3):462-467. 被引量:28
  • 3Zukoski E E. Influence of Viscosity, Surface Tension and Inclination Angle on Motion of Long Bubbles in Closed Tubes. J. Fluid Mech., 1966, 25:821-837.
  • 4Bendiksen K H. An Experimental Investigation of The Motion of Long Bubbles in Inclined Tube. Int. J. Multiphase Flow, 1984, 10:467-483.
  • 5Chilton C H, Colburn A P. Mass Transfer Coefficients Prediction from Data on Heat Transfer and Fluid Friction. Ind. Eng. Chem., 1934, 26:1183-1187.
  • 6孙凤玉,张鹏,王如竹,徐烈.高温超导电缆用波纹管内液氮流动特性的数值研究[J].低温与超导,2007,35(5):376-379. 被引量:8
  • 7Kreutzer M T, Kapteijn F, Moulijn J A, et al. Inertial and interfacial effects on pressure drop of Taylor flow in capillaries [J]. AIChE Journal, 2005, 51 (9): 2428-2440.
  • 8Lin H, Vandu C O, Krishna R. Hydrodynamics of Taylor flow in vertical capillaries: flow regimes, bubble rise velocity, liquid slug length, and pressure drop [J]. Industrial & Engineering Chemistry Research, 2005, 44 (14): 4884-4897.
  • 9Han Y, Shikazono N. Measurement of liquid film thickness in micro square channel [J]. International Journal of Multiphase Flow, 2009, 35 (10): 896-903.
  • 10Qian D, Lawal A. Numerical study on gas and liquid slugs for Taylor flow in a T-junction microchannel [J]. Chemical Engineering Science, 2006, 61 (23): 7609-7625.

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