Permeation and Blockage of Fine Particles Transported by Updraft through a Packed Bed (Numerical Approach)

Satou, Shin; Stephan, Siahaan Andrey; Oishi, Yoshihiko; Kawai, Hideki; Nogami, Hiroshi

doi:10.2355/isijinternational.isijint-2020-108

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…The forces at play are the gravitational force m i g and the contact force between particles (consisting of damping forces in normal F dn,ij and tangential F dt,ij , as well as contact forces of normal F cn,ij and tangential F ct,ij ). The particle i is additionally exposed to two other forms of torques, such as the rolling friction torque M ij and the tangential torque T ij [28][29][30].…”

Section: Governing Equationsmentioning

confidence: 99%

“…Suzuki et al developed a particle contact force model considering an intermediate liquid for examining the movement and deposition of powders [28]. Satou et al created a 3D CFD-DEM method to better comprehend the obstructive impact of the upflowed gas and diameter ratio on the fixed bed, which results in fines clogging development and infiltration criteria [29]. The movement of fines through a jet hole made of coarse particles in the microscopic gas stream was examined by Stephan et al [30].…”

Section: Introductionmentioning

confidence: 99%

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An unresolved CFD-DEM method for studying migration and clogging of fine particles through a packed bed

Wang

et al. 2023

Ironmaking & Steelmaking

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Industrial production frequently experiences clogging of fines in a packed bed, which is also a longterm challenge. To investigate the flow of fines and comprehend the migration and clogging of fines, an unresolved CFD-DEM model was created in this paper. The effects of key variables are examined. It was demonstrated that the clogging mechanism of fins at various diameter ratios was different, and the larger diameter of fines, the more obvious the clogging. The number of inlet particles determines the occurrence of clogging. Fines are more inclined to form stagnant structures in the same place.One key element influencing clogging is the rolling friction coefficient, which regulates particle motion. The quantity of small particles that cause blockages likewise rises as the rolling friction coefficient does. The research enables the knowledge and optimization of industrial production by offering a basic understanding of the blocking behaviour of fines in packed beds.

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Section: Governing Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An unresolved CFD-DEM method for studying migration and clogging of fine particles through a packed bed

Wang

et al. 2023

Ironmaking & Steelmaking

View full text Add to dashboard Cite

show abstract

“…The behaviour of the powder particles passing through an orifice formed by three coarse particles under gas flow condition was numerically analysed using DEM-CFD method [26]. Satou et al [27] clarified blockage formation and permeability criterion of fine particles due to the obstructing effect of updraft gas and fines to packed bed through using CFD-DEM method. The deposition and agglomeration characteristics of fine particles in a fibrous media were also studied [28].…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis of blockage behavior of fine particles in a packed bed by discrete element method

She

Liu

Liu³

et al. 2021

Ironmaking & Steelmaking

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The dynamic blockage behaviour of fine particles in a packed bed was simulated using the discrete element method (DEM). The influence of key variables are examined. The calculation results showed that fine particles blockage in packed bed are easy to occur in the area where fine particles just enter the bed. The mechanism of blockage formation is mainly due to mechanical interactions between fine particles, which can create arches on packed bed and stop the flow. When the fine particles form a bridge across the pore throat of the orifice, the bottleneck of void space becomes the starting point for blockage formation. The fine particles with a larger rolling friction coefficient have a higher clogging ratio. With the increase in charging fine particles, the fine particles experience more collisions with each other, and the clogging ratio increases. The initial velocity of fine particles also has an impact on the blockage behaviour.

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Numerical study of fine particles behaviors in a packed bed with lateral injection using CFD-DEM

et al. 2021

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Permeation and Blockage of Fine Particles Transported by Updraft through a Packed Bed (Numerical Approach)

Cited by 4 publications

References 17 publications

An unresolved CFD-DEM method for studying migration and clogging of fine particles through a packed bed

An unresolved CFD-DEM method for studying migration and clogging of fine particles through a packed bed

Dynamic analysis of blockage behavior of fine particles in a packed bed by discrete element method

Numerical study of fine particles behaviors in a packed bed with lateral injection using CFD-DEM

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