Numerical Simulation of Concentration Field on Liquid Side around Bubble during Rising and Coalescing Process in Non-Newtonian Fluid

朱春英; 付涛涛; 高习群; 马友光

doi:10.1016/S1004-9541(11)60059-1

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Numerical Simulation of Concentration Field on Liquid Side around Bubble during Rising and Coalescing Process in Non-Newtonian Fluid

Updated：2026-01-06

- Numerical Simulation of Concentration Field on Liquid Side around Bubble during Rising and Coalescing Process in Non-Newtonian Fluid
- Chinese Journal of Chemical Engineering Vol. 19, Issue 5, Pages: 799-807(2011)
- Affiliations：
  
  1. School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University,Tianjin,China,300072
  2. Yifang Industry Corporation, Liaohua Petrochemical Fiber Company,Liaoyang,China,111003
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(11)60059-1
  CLC：
- Published：2011
- Accepted：
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ZHU Chunying, FU Taotao, GAO Xiqun, MA Youguang. Numerical Simulation of Concentration Field on Liquid Side around Bubble during Rising and Coalescing Process in Non-Newtonian Fluid[J]. , 2011, 19(5): 799-807.
DOI：

ZHU Chunying, FU Taotao, GAO Xiqun, MA Youguang. Numerical Simulation of Concentration Field on Liquid Side around Bubble during Rising and Coalescing Process in Non-Newtonian Fluid[J]. , 2011, 19(5): 799-807. DOI： 10.1016/S1004-9541(11)60059-1.

摘要

Abstract

On the basis of Navier-Stockes equation and convection-diffusion equation

combined with surface ten-sion and penetration models

the equations of moment and mass transfer between bubble and the ambient non-Newtonian liquid were established. The formation of a single bubble from a submersed nozzle of 1.0 mm di-ameter and the mass transfer from an artificially fixed bubble into the ambient liquid were simulated by the volume-of-fluid (VOF) method. Good agreement between simulation results and experimental data confirmed the validity of the numerical method. Furthermore

the concentration distribution around rising bubbles in shear thinning non-Newtonian fluid was simulated. When the process of a single ellipsoidal bubble with the bubble deformation rate below 2.0 rises

the concentration distribution is a singletail in the bubble’s wake

but it is fractal when the bubble deformation rate is greater than 2.0. For the overtaking of two in-line rising bubbles

the concentration distribution area between two bubbles broadens gradually and then coalescence occurs. The bifurcation of concentration distribution appears in the rear of the resultant bubble.

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