CFD modeling of a CFB riser using improved inlet boundary conditions

B. T. Peng, C. Zhang, J. X. Zhu, X. B. Qi

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

Abstract

A computational fluid dynamics (CFD) model based on Eulerian-Eulerian approach coupled with granular kinetics theory was adopted to investigate the hydrodynamics and flow structures in a circulating fluidized bed (CFB) riser column. A new approach to specify the inlet boundary conditions was proposed in this study to simulate gas-solids flow in CFB risers more accurately. Simulation results were compared with the experimental data, and good agreement between the numerical results and experimental data was observed under different operating conditions, which indicates the effectiveness and accuracy of the CFD model with the proposed inlet boundary conditions. The results also illustrate a clear core annulus structure in the CFB riser under all operating conditions both experimentally and numerically.

Original languageEnglish
Title of host publication6th International Symposium on Multiphase flow, Heat Mass Transfer and Energy Conversion
Pages760-765
Number of pages6
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event6th International Symposium on Multiphase flow, Heat Mass Transfer and Energy Conversion - Xian, China
Duration: 11 Jul 200915 Jul 2009

Publication series

NameAIP Conference Proceedings
Volume1207
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference6th International Symposium on Multiphase flow, Heat Mass Transfer and Energy Conversion
Country/TerritoryChina
CityXian
Period11/07/0915/07/09

Keywords

  • CFB riser
  • CFD
  • Eulerian-Eulerian approach
  • Gas-solids two phase flow
  • Inlet boundary conditions

ASJC Scopus subject areas

  • General Physics and Astronomy

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