CFD-DEM study on the interaction between triboelectric charging and fluidization of particles in gas-solid fluidized beds

Wang, Chunlei; Liu, Guodong; Zhai, Zhanhu; Guo, Xinyao

doi:10.1016/j.powtec.2023.118340

Powder Technology

2023

DOI: 10.1016/j.powtec.2023.118340

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CFD-DEM study on the interaction between triboelectric charging and fluidization of particles in gas-solid fluidized beds

Chunlei Wang

Guodong Liu

Zhanhu Zhai

et al.

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2024

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Cited by 4 publications

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Cohesive particle–fluid systems: An overview of their CFD simulation

Marchelli,

Fiori,

Di Felice

2024

Can J Chem Eng

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Solid particles may experience different kinds of cohesive forces, which cause them to form agglomerates and affect their flow in multiphase systems. When such systems are simulated through computational fluid dynamics (CFD) programs, appropriate modelling tools must be included to reproduce this feature. In this review, these strategies are addressed for various systems and scales. After an introduction of the different forces (van der Waals, electrostatic, liquid bridge forces, etc.), the modelling approaches are categorized under three methodologies. For diluted slurries of very fine particles, many researchers succeeded with pseudo‐single phase approaches, employing a model for the non‐Newtonian rheology. This was especially popular for sludges in anaerobic digestions or certain types of soils. In other cases, continuum‐based approaches seem to be more adequate, including cohesiveness in the kinetic theory of granular flows or the restitution coefficient. Geldart‐A particles experiencing van der Waals forces are the primary focus of such studies. Finally, when each particle is modelled as a discrete element, the cohesive force can be directly specified; this is especially widespread for the wet fluidization case. For each of these approaches, a general overview of the main strategies, achievements, and limits is provided.

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Cohesive particle–fluid systems: An overview of their CFD simulation

Marchelli,

Fiori,

Di Felice

2024

Can J Chem Eng

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Investigation on dynamic adhesion characteristics and evolution mechanism of charged particles

Hu,

Liang,

Zhang

et al. 2024

Powder Technology

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Super-quadric CFD-DEM modelling of chip-like particle-liquid flow in a rotary drum

Tang,

Wang,

Jin

et al. 2024

Powder Technology

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CFD-DEM study on the interaction between triboelectric charging and fluidization of particles in gas-solid fluidized beds

Cited by 4 publications

References 30 publications

Cohesive particle–fluid systems: An overview of their CFD simulation

Cohesive particle–fluid systems: An overview of their CFD simulation

Investigation on dynamic adhesion characteristics and evolution mechanism of charged particles

Super-quadric CFD-DEM modelling of chip-like particle-liquid flow in a rotary drum

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