Internal recirculation flow structure in vertical upflow gas-solids suspensions Part I. A core-annulus model

Dingrong Bai, Jing Xu Zhu, Yong Jin, Zhiqing Yu

Research output: Journal PublicationArticlepeer-review

34 Citations (Scopus)

Abstract

A comprehensive, predictive two-region model has been developed to describe the core-annular internal recirculation flow structure in vertical gas-solids upward flowing suspensions. This new model is more flexible by allowing axial variations of the core radius and the gas and particle velocities in both the core and the annular regions. The validity of the model has been confirmed by good agreement between the predicted values and the various experimental measurements reported in the literature, including the radius of core region, voidage in the core region, solids recirculation ratio and deposition coefficient.

Original languageEnglish
Pages (from-to)171-177
Number of pages7
JournalPowder Technology
Volume85
Issue number2
DOIs
Publication statusPublished - Nov 1995
Externally publishedYes

Keywords

  • Circulating fluidized bed
  • Core-annulus model
  • Gas-solids flow
  • Internal recirculation
  • Solids suspension flow

ASJC Scopus subject areas

  • Chemical Engineering (all)

Fingerprint

Dive into the research topics of 'Internal recirculation flow structure in vertical upflow gas-solids suspensions Part I. A core-annulus model'. Together they form a unique fingerprint.

Cite this