Coarse-Grained DEM–CFD Simulation of Fluidization Behavior of Irregular Shape Sand Particles

Xiaomeng Xu; Cheng Li; Xi Gao

doi:10.1021/acs.iecr.2c00891

Coarse-Grained DEM–CFD Simulation of Fluidization Behavior of Irregular Shape Sand Particles

Xiaomeng Xu, Cheng Li, Xi Gao^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Accurate modeling and simulation of irregular shape sand particle fluidization are challenging as particle shape-resolved simulation is complex and time-consuming. In this study, the coarse-grained discrete element model (CG-DEM)-computational fluid dynamics (CFD) was adopted to improve the computational feasibility of traditional CFD–DEM and simplify the mathematical modeling by lumping a certain amount of physical particles into a numerical parcel. 3D CGDEM–CFD simulated the fluidization behavior of irregular shape sand particles in a fluidized bed, and several key parameters or model settings were assessed to identify critical model factors. Moreover, the impact of the model parameters on hydrodynamics was quantified by comparing the simulation results with the experimental data. The results demonstrate that applying a rolling friction model can increase the simulation accuracy of the fluidization behavior of non-spherical sand particles.

Original language	American English
Journal	Industrial and Engineering Chemistry Research
DOIs	https://doi.org/10.1021/acs.iecr.2c00891
State	Published - 18 Jun 2022

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title = "Coarse-Grained DEM–CFD Simulation of Fluidization Behavior of Irregular Shape Sand Particles",

abstract = "Accurate modeling and simulation of irregular shape sand particle fluidization are challenging as particle shape-resolved simulation is complex and time-consuming. In this study, the coarse-grained discrete element model (CG-DEM)-computational fluid dynamics (CFD) was adopted to improve the computational feasibility of traditional CFD–DEM and simplify the mathematical modeling by lumping a certain amount of physical particles into a numerical parcel. 3D CGDEM–CFD simulated the fluidization behavior of irregular shape sand particles in a fluidized bed, and several key parameters or model settings were assessed to identify critical model factors. Moreover, the impact of the model parameters on hydrodynamics was quantified by comparing the simulation results with the experimental data. The results demonstrate that applying a rolling friction model can increase the simulation accuracy of the fluidization behavior of non-spherical sand particles.",

author = "Xiaomeng Xu and Cheng Li and Xi Gao",

year = "2022",

month = jun,

day = "18",

doi = "10.1021/acs.iecr.2c00891",

language = "American English",

journal = "Industrial and Engineering Chemistry Research",

issn = "0888-5885",

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TY - JOUR

T1 - Coarse-Grained DEM–CFD Simulation of Fluidization Behavior of Irregular Shape Sand Particles

AU - Xu, Xiaomeng

AU - Li, Cheng

AU - Gao, Xi

PY - 2022/6/18

Y1 - 2022/6/18

N2 - Accurate modeling and simulation of irregular shape sand particle fluidization are challenging as particle shape-resolved simulation is complex and time-consuming. In this study, the coarse-grained discrete element model (CG-DEM)-computational fluid dynamics (CFD) was adopted to improve the computational feasibility of traditional CFD–DEM and simplify the mathematical modeling by lumping a certain amount of physical particles into a numerical parcel. 3D CGDEM–CFD simulated the fluidization behavior of irregular shape sand particles in a fluidized bed, and several key parameters or model settings were assessed to identify critical model factors. Moreover, the impact of the model parameters on hydrodynamics was quantified by comparing the simulation results with the experimental data. The results demonstrate that applying a rolling friction model can increase the simulation accuracy of the fluidization behavior of non-spherical sand particles.

AB - Accurate modeling and simulation of irregular shape sand particle fluidization are challenging as particle shape-resolved simulation is complex and time-consuming. In this study, the coarse-grained discrete element model (CG-DEM)-computational fluid dynamics (CFD) was adopted to improve the computational feasibility of traditional CFD–DEM and simplify the mathematical modeling by lumping a certain amount of physical particles into a numerical parcel. 3D CGDEM–CFD simulated the fluidization behavior of irregular shape sand particles in a fluidized bed, and several key parameters or model settings were assessed to identify critical model factors. Moreover, the impact of the model parameters on hydrodynamics was quantified by comparing the simulation results with the experimental data. The results demonstrate that applying a rolling friction model can increase the simulation accuracy of the fluidization behavior of non-spherical sand particles.

UR - https://doi.org/10.1021/acs.iecr.2c00891

U2 - 10.1021/acs.iecr.2c00891

DO - 10.1021/acs.iecr.2c00891

M3 - Article

SN - 0888-5885

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

ER -

Coarse-Grained DEM–CFD Simulation of Fluidization Behavior of Irregular Shape Sand Particles

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