Cocurrent gas-solid downflow fluidized bed (downer) reactors: IV hydrodynamic modelling

Yonglin Yang, Jingxu Zhu

Research output: Journal PublicationArticlepeer-review


A comprehensive review for the hydrodynamic modelling of gas-solid two-phase flow in both risers and downers is presented in this paper. These hydrodynamic models for risers were classified as four types : ( I ) one-dimensional model; ( II ) core-annulus model; ( III ) tow-dimensional model; and ( IV ) multi-scale energy minimization model. Two kinds of hydrodynamic models, a one-dimensional hydrodynamic model and a two- dimensional turbulent model deduced from the fundamental dynamic theory, are also applied to predict the flow behaviors in downer reactors. The modelling results provide the theoretic basis for design, scale-up and optimization of downer reactors.

Original languageEnglish
Pages (from-to)110-112
Number of pages3
JournalHuaxue Fanying Gongcheng Yu Gongyi/Chemical Reaction Engineering and Technology
Issue number1
Publication statusPublished - 1997
Externally publishedYes


  • κ-ε model
  • Downers
  • Gas-solid hydrodynamic modelling
  • Risers

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)


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