Verification of filtered Two Fluid Models for reactive gas-solid flows

Jan Hendrik Cloete, Schalk Cloete, Stefan Radl, Shahriar Amini

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

CFD simulations of fluidized bed reactors are generally limited to the laboratory scale because of the fine grid sizes that are required to resolve complex particle clustering phenomena. The filtered Two Fluid Model (fTFM) approach has recently emerged as a promising method for allowing reasonable predictions of large-scale fluidized beds. This paper presents a verification study of new two-marker fTFM closures. In general, the fTFMs matched well to the resolved simulations. It was shown that the two-marker models significantly increased the predicted degree of phase segregation (resolved in coarse grid simulations), and hence have superior capabilities compared to simpler one-marker models. Also, the two-marker model predicted a more dynamic transient flow behaviour. However, further work is recommended to extend the present study over a wider range of flow conditions.
Original languageEnglish
Title of host publication12th International Conference on CFD in the Oil & Gas, Metallurgical and Process Industries (CFD2017)
Pages1-8
Number of pages8
Publication statusPublished - 30 May 2017

Keywords

  • two fluid model
  • effective reaction rate
  • transport phenomena

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Fields of Expertise

  • Mobility & Production

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