Particle effects on gas-liquid-solid flows

Xinyu Zhang, Goodarz Ahmadi

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)


A numerical simulation is carried out to study the role of particles in gas-liquid-solid flows in bubble columns. An Eulerian-Lagrangian model is used and the liquid flow is modeled using a volume-averaged system of governing equations, while motions of bubbles and particles are evaluated using Lagrangian trajectory analysis. It is assumed that the bubbles remain spherical. The interactions between bubble-liquid and particle-liquid are included in the study. The discrete phase equations include drag, lift, buoyancy, and virtual mass forces. Particle-particle interactions and bubble-bubble interactions are accounted for by the hard sphere model approach. The bubble coalescence is also included in the model. Neutrally buoyant particles are used in the study. A parcel approach is used and a parcel represents a certain number of particles of same size, velocity, and other properties. Variation of particle loading is modeled by changing the corresponding number of particles in every parcel. In a previous work, the predicted results were compared with the experimental data, and good agreement was obtained. The transient flow characteristics of the three-phase flow are studied and the effects of particle loading on flow characteristics are discussed. The simulations show that the transient characteristics of the three-phase flow in a column are dominated by time-dependent vortices. The particle loading can affect the characteristics of the three-phase flows and flows with high particle loading evolve faster.

Original languageEnglish
Title of host publicationFluids and Thermal Systems; Advances for Process Industries
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages8
ISBN (Print)9780791854921
Publication statusPublished - 2011
Externally publishedYes
EventASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 - Denver, CO, United States
Duration: 11 Nov 201117 Nov 2011

Publication series

NameASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011


ConferenceASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
Country/TerritoryUnited States
CityDenver, CO


  • Gas-liquid-solid flows
  • Numerical simulation
  • Parcel approach
  • Particle effects

ASJC Scopus subject areas

  • Mechanical Engineering


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