Eulerian-Lagrangian simulations of unsteady gas-liquid flows in bubble columns

Vivek V. Buwa, Dhanannjay S. Deo, Vivek V. Ranade*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

116 Citations (Scopus)

Abstract

We studied the dynamics of gas-liquid flows in a rectangular bubble column using Eulerian-Lagrangian simulations. Three-dimensional, unsteady simulations were performed to simulate the dynamic characteristics of the oscillating bubble plume. The effect of superficial gas velocity and aerated liquid height-to-column width (H/W) ratio on the dynamic and time-averaged flow properties was studied and the simulated results were validated using wall pressure and voidage fluctuation measurements. The effect of lift force and numerical diffusion on the dynamic and time-averaged properties is discussed in detail. Further, the results obtained using the Eulerian-Lagrangian simulations were compared with the Eulerian-Eulerian simulations. The bubble scale information, which is otherwise lost in the Eulerian-Eulerian simulations, was validated using the voidage fluctuation measurements. Such experimentally validated Eulerian-Lagrangian models will be useful for the simulation of mass transfer and reactions in bubble columns.

Original languageEnglish
Pages (from-to)864-885
Number of pages22
JournalInternational Journal of Multiphase Flow
Volume32
Issue number7
DOIs
Publication statusPublished - Jul 2006
Externally publishedYes

Keywords

  • Bubble column
  • CFD
  • Dynamics
  • Eulerian-Eulerian simulations
  • Eulerian-Lagrangian simulations
  • Gas-liquid flow

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

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