Numerical investigations on gas–solid flow in circulating fluidized bed risers using a new cluster-based drag model

Zeneng Sun; Chao Zhang; Jesse Zhu

doi:10.1016/j.partic.2021.05.008

Numerical investigations on gas–solid flow in circulating fluidized bed risers using a new cluster-based drag model

Zeneng Sun, Chao Zhang, Jesse Zhu

Research output: Journal Publication › Article › peer-review

7 Citations (Scopus)

Abstract

A cluster-based drag model is proposed for the gas–solid circulating fluidized bed (CFB) riser by including the cluster information collected from image processing and wavelet analysis into the calculation of system drag. The performance of the proposed drag model is compared with some commonly used drag models. A good agreement with the experimental data is achieved by the proposed cluster-based drag model. Error analysis of the proposed cluster-based drag model based on the local distributions of solids holdup and particle velocity is conducted. The clustering phenomenon in the low-density and high-density CFB risers and the effect of the cluster size on the simulation accuracy are also numerically studied by the proposed drag model.

Original language	English
Pages (from-to)	9-23
Number of pages	15
Journal	Particuology
Volume	63
DOIs	https://doi.org/10.1016/j.partic.2021.05.008
Publication status	Published - Apr 2022
Externally published	Yes

Keywords

Circulating fluidized bed
Clustering effect
Drag model
Gas–solid flow structures

ASJC Scopus subject areas

General Chemical Engineering
General Materials Science

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10.1016/j.partic.2021.05.008

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title = "Numerical investigations on gas–solid flow in circulating fluidized bed risers using a new cluster-based drag model",

abstract = "A cluster-based drag model is proposed for the gas–solid circulating fluidized bed (CFB) riser by including the cluster information collected from image processing and wavelet analysis into the calculation of system drag. The performance of the proposed drag model is compared with some commonly used drag models. A good agreement with the experimental data is achieved by the proposed cluster-based drag model. Error analysis of the proposed cluster-based drag model based on the local distributions of solids holdup and particle velocity is conducted. The clustering phenomenon in the low-density and high-density CFB risers and the effect of the cluster size on the simulation accuracy are also numerically studied by the proposed drag model.",

keywords = "Circulating fluidized bed, Clustering effect, Drag model, Gas–solid flow structures",

author = "Zeneng Sun and Chao Zhang and Jesse Zhu",

note = "Publisher Copyright: {\textcopyright} 2021 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences",

year = "2022",

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doi = "10.1016/j.partic.2021.05.008",

language = "English",

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T1 - Numerical investigations on gas–solid flow in circulating fluidized bed risers using a new cluster-based drag model

AU - Sun, Zeneng

AU - Zhang, Chao

AU - Zhu, Jesse

PY - 2022/4

Y1 - 2022/4

N2 - A cluster-based drag model is proposed for the gas–solid circulating fluidized bed (CFB) riser by including the cluster information collected from image processing and wavelet analysis into the calculation of system drag. The performance of the proposed drag model is compared with some commonly used drag models. A good agreement with the experimental data is achieved by the proposed cluster-based drag model. Error analysis of the proposed cluster-based drag model based on the local distributions of solids holdup and particle velocity is conducted. The clustering phenomenon in the low-density and high-density CFB risers and the effect of the cluster size on the simulation accuracy are also numerically studied by the proposed drag model.

AB - A cluster-based drag model is proposed for the gas–solid circulating fluidized bed (CFB) riser by including the cluster information collected from image processing and wavelet analysis into the calculation of system drag. The performance of the proposed drag model is compared with some commonly used drag models. A good agreement with the experimental data is achieved by the proposed cluster-based drag model. Error analysis of the proposed cluster-based drag model based on the local distributions of solids holdup and particle velocity is conducted. The clustering phenomenon in the low-density and high-density CFB risers and the effect of the cluster size on the simulation accuracy are also numerically studied by the proposed drag model.

KW - Circulating fluidized bed

KW - Clustering effect

KW - Drag model

KW - Gas–solid flow structures

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DO - 10.1016/j.partic.2021.05.008

M3 - Article

AN - SCOPUS:85109444400

SN - 1674-2001

VL - 63

SP - 9

EP - 23

JO - Particuology

JF - Particuology

ER -

Numerical investigations on gas–solid flow in circulating fluidized bed risers using a new cluster-based drag model

Abstract

Keywords

ASJC Scopus subject areas

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