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Effects of Particle Density on Gas-Liquid-Solid Flows in Bubble Columns

[+] Author Affiliations
Xinyu Zhang

University of Nottingham Ningbo China, Ningbo, China

Goodarz Ahmadi

Clarkson University, Potsdam, NY

Paper No. FEDSM2014-21082, pp. V01CT23A002; 8 pages
  • ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels
  • Volume 1C, Symposia: Fundamental Issues and Perspectives in Fluid Mechanics; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Gas-Solid Flows: Dedicated to the Memory of Professor Clayton T. Crowe; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes
  • Chicago, Illinois, USA, August 3–7, 2014
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4623-0
  • Copyright © 2014 by ASME


A numerical simulation is performed to study the effects of particle density on gas-liquid-solid flows in bubble columns. An Eulerian-Lagrangian model is used where the liquid flow is modeled by a volume-averaged system of governing equations and motions of particles and bubbles are modeled by Lagrangian trajectory method. Interactions between particle-particle, bubble-bubble, bubble-liquid and particle-liquid are included in the study. The drag, lift, buoyancy, and virtual mass forces are evaluated for the particles and bubbles. Particle-particle and bubble-bubble interactions are accounted for by a hard sphere model. The bubble coalescence is also included in this study. The predicted results were compared with the experimental data in a previous work, and satisfied agreement was obtained. Particles with various density are used in different cases. A parcel method is used to account for particle load. The effects of particle density on gas-liquid-solid three-phase flows are discussed based on the comparison of the transient flow characteristics of these gas-liquid-solid three-phase flows. The simulations show that large particle density may result in weak phase mixing in gas-liquid-solid three-phase flows in bubble columns.

Copyright © 2014 by ASME



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