Verification of filtered Two-Fluid Models in different flow regimes

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

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

Abstract

This paper compares coarse grid simulations completed with various filtered models to computationally very expensive resolved simulations of fluidization in a 2D setup. It was shown that the original one-marker filtered model performed best. Surprisingly, more recently presented two-marker models showed substantial deviations from the resolved simulations. Unfortunately, one-marker models are not suitable for general large-scale fluidized bed simulations. Therefore, the performance of a new two-marker model is assessed, which respects certain limits when correcting the drag force and uses a normalized filtered slip velocity. While the initial results with this new model are encouraging, substantial uncertainty still exists due to the present lack of a dedicated filtered stress model.
Original languageEnglish
Title of host publication12th International Conference on Fluidized Bed Technology (CFB-12)
Place of PublicationKrakow, Poland
PublisherAGH University of Science and Technology
Pages1-8
Number of pages8
Publication statusPublished - 30 May 2017

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Keywords

  • filtered model
  • verification
  • transport phenomena

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Fields of Expertise

  • Mobility & Production

Cite this

Cloete, J. H., Cloete, S., Radl, S., & Amini, S. (2017). Verification of filtered Two-Fluid Models in different flow regimes. In 12th International Conference on Fluidized Bed Technology (CFB-12) (pp. 1-8). Krakow, Poland: AGH University of Science and Technology.