Identification of regime transition from bubbling to turbulent fluidization through dynamic phase tracking method

Hanlin Wang, Jesse Zhu, Weixing Huang, Hui Zhang

Research output: Journal PublicationArticlepeer-review

7 Citations (Scopus)

Abstract

Dynamic phase tracking method was proposed by using the instantaneous local solids concentration signals to demarcate the regime transition from bubbling to turbulent fluidization. Compared with the conventional methods, this method can provide clear demarcation between bubbling fluidization, the transition process and turbulent fluidization. And some detailed characteristics about regime transition had been obtained. The tendency of bubble coalescence surpasses that of bubble breakup in bubbling fluidization, but the latter one is the primary phenomenon in turbulent fluidization. And in the transition process, neither of the tendencies is dominant. Moreover, the transition process is increasingly gradual, with radial position extending from the center to the wall region, with axial position moving from the top to the bottom of the fluidized bed, and with static bed height becoming higher. Whether the transition process is more gradual is positively correlated with the solids concentration of dense phase.

Original languageEnglish
Pages (from-to)534-548
Number of pages15
JournalPowder Technology
Volume360
DOIs
Publication statusPublished - 15 Jan 2020
Externally publishedYes

Keywords

  • Bubble phase
  • Dense phase
  • Flow regime transition
  • Local solids concentration fluctuation
  • Turbulent fluidization

ASJC Scopus subject areas

  • Chemical Engineering (all)

Fingerprint

Dive into the research topics of 'Identification of regime transition from bubbling to turbulent fluidization through dynamic phase tracking method'. Together they form a unique fingerprint.

Cite this