CFD Simulation of Mixing and Segregation of Binary Solid Mixtures in a Dense Fluidized Bed

Bozidar Anicic, Bona Lu, Weigang Lin, Hao Wu*, Kim Dam-Johansen, Wei Wang

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The mixing and segregation behaviour of binary solid mixtures has been extensively studied through various experiments, while accurate CFD simulations are difficult to achieve due to process complexity and a lack of reliable constitutive relations. In this study, CFD simulations of a dense fluidized bed with glass and polystyrene particles were performed in order to identify a universal set of simulation parameters and models for simulating binary mixtures with different mixed and segregation behaviour. Through a comparison to experimental data, it was found that the EMMS drag model coupled with the Ma‐Ahmadi solid pressure and radial distribution models predicted more a reasonable axial distribution of solid phases than the Syamlal O´Brien drag model coupled with the Lun et al. solid pressure and radial distribution models. The increase in the solid‐solid drag further improved the simulation results.
Original languageEnglish
JournalThe Canadian Journal of Chemical Engineering
ISSN0008-4034
DOIs
Publication statusAccepted/In press - 2019

Keywords

  • Binary mixture
  • CFD
  • Drag coefficient
  • EMMS
  • Solid-solid drag

Cite this

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title = "CFD Simulation of Mixing and Segregation of Binary Solid Mixtures in a Dense Fluidized Bed",
abstract = "The mixing and segregation behaviour of binary solid mixtures has been extensively studied through various experiments, while accurate CFD simulations are difficult to achieve due to process complexity and a lack of reliable constitutive relations. In this study, CFD simulations of a dense fluidized bed with glass and polystyrene particles were performed in order to identify a universal set of simulation parameters and models for simulating binary mixtures with different mixed and segregation behaviour. Through a comparison to experimental data, it was found that the EMMS drag model coupled with the Ma‐Ahmadi solid pressure and radial distribution models predicted more a reasonable axial distribution of solid phases than the Syamlal O´Brien drag model coupled with the Lun et al. solid pressure and radial distribution models. The increase in the solid‐solid drag further improved the simulation results.",
keywords = "Binary mixture, CFD, Drag coefficient, EMMS, Solid-solid drag",
author = "Bozidar Anicic and Bona Lu and Weigang Lin and Hao Wu and Kim Dam-Johansen and Wei Wang",
year = "2019",
doi = "10.1002/cjce.23561",
language = "English",
journal = "Canadian Journal of Chemical Engineering",
issn = "0008-4034",
publisher = "Wiley-Blackwell",

}

CFD Simulation of Mixing and Segregation of Binary Solid Mixtures in a Dense Fluidized Bed. / Anicic, Bozidar; Lu, Bona; Lin, Weigang; Wu, Hao; Dam-Johansen, Kim; Wang, Wei.

In: The Canadian Journal of Chemical Engineering, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - CFD Simulation of Mixing and Segregation of Binary Solid Mixtures in a Dense Fluidized Bed

AU - Anicic, Bozidar

AU - Lu, Bona

AU - Lin, Weigang

AU - Wu, Hao

AU - Dam-Johansen, Kim

AU - Wang, Wei

PY - 2019

Y1 - 2019

N2 - The mixing and segregation behaviour of binary solid mixtures has been extensively studied through various experiments, while accurate CFD simulations are difficult to achieve due to process complexity and a lack of reliable constitutive relations. In this study, CFD simulations of a dense fluidized bed with glass and polystyrene particles were performed in order to identify a universal set of simulation parameters and models for simulating binary mixtures with different mixed and segregation behaviour. Through a comparison to experimental data, it was found that the EMMS drag model coupled with the Ma‐Ahmadi solid pressure and radial distribution models predicted more a reasonable axial distribution of solid phases than the Syamlal O´Brien drag model coupled with the Lun et al. solid pressure and radial distribution models. The increase in the solid‐solid drag further improved the simulation results.

AB - The mixing and segregation behaviour of binary solid mixtures has been extensively studied through various experiments, while accurate CFD simulations are difficult to achieve due to process complexity and a lack of reliable constitutive relations. In this study, CFD simulations of a dense fluidized bed with glass and polystyrene particles were performed in order to identify a universal set of simulation parameters and models for simulating binary mixtures with different mixed and segregation behaviour. Through a comparison to experimental data, it was found that the EMMS drag model coupled with the Ma‐Ahmadi solid pressure and radial distribution models predicted more a reasonable axial distribution of solid phases than the Syamlal O´Brien drag model coupled with the Lun et al. solid pressure and radial distribution models. The increase in the solid‐solid drag further improved the simulation results.

KW - Binary mixture

KW - CFD

KW - Drag coefficient

KW - EMMS

KW - Solid-solid drag

U2 - 10.1002/cjce.23561

DO - 10.1002/cjce.23561

M3 - Journal article

JO - Canadian Journal of Chemical Engineering

JF - Canadian Journal of Chemical Engineering

SN - 0008-4034

ER -