Numerical simulation of fine particle liquid–solid flow in porous media based on LBM‐IBM‐DEM

Fo, Bin; Xu, Renjie; Xi, Jianfei; Lu, Yang; Song, Xianping; Cai, Jie; Gu, Zhongzhu

doi:10.1002/cjce.24690

“…Where r is radius and Rµ is the rolling friction model parameter and the relative angular velocity at contact is defined as (16) The simulation was carried out using the open-source software CFDEM using the pseudo-particleresolved solver. The detailed physical model and numerical method can be found in the publication by Goniva et al [23,30] The validation of the numerical method in this study is in Appendix A.…”

Section: Contact Forcementioning

confidence: 99%

Effect of velocity on the clogging of particles in water-saturated porous media using the CFDDEM

Sun

¹

2023

Preprint

0

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The clogging of particles in a slurry passing through a porous medium is mainly affected by the ratio of the particle diameter to the pore throat size of the medium. A previous study showed that the Stokes number and the particle concentration affect particle clogging and retention. Therefore, in this study, the effects of fluid velocity on particle clogging were investigated by analyzing the particle transport and retention in a homogeneous porous medium. The fluid-particle two-phase flow in a porous medium was simulated using the computational fluid dynamicsdiscrete element method. The results showed that increasing the fluid velocity of particles such that the Stokes number was almost equal to 1 increased the separation efficiency of particles. Further increasing the fluid velocity reduced the residence time, which reduced the separation efficiency of the particles.

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“…Fo et al . [16] studied the effect of fine particle flow in porous media by considering the velocity at the inlet using the LBM-DEM-IBM. Reportedly, an increase in the fluid inlet velocity increased the possibility of interaction between the particles and porous media.…”

Section: Introductionmentioning

confidence: 99%

Effect of velocity on the clogging of particles in water-saturated porous media using the CFDDEM

Sun

¹

2023

Preprint

0

View full text Add to dashboard Cite

The clogging of particles in a slurry passing through a porous medium is mainly affected by the ratio of the particle diameter to the pore throat size of the medium. A previous study showed that the Stokes number and the particle concentration affect particle clogging and retention. Therefore, in this study, the effects of fluid velocity on particle clogging were investigated by analyzing the particle transport and retention in a homogeneous porous medium. The fluid-particle two-phase flow in a porous medium was simulated using the computational fluid dynamicsdiscrete element method. The results showed that increasing the fluid velocity of particles such that the Stokes number was almost equal to 1 increased the separation efficiency of particles. Further increasing the fluid velocity reduced the residence time, which reduced the separation efficiency of the particles.

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“…In addition, they noted that clogging occurs in porous media with a heterogeneous pore size distribution, but not in microscopically homogeneous media. Fo et al (2022) studied the fine particle migration and blockage in porous media and their effects on the porosity and fluid velocity.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamics and effect of velocity on particle filtration due to bridging in water-saturated porous media using CFD–DEM simulation

Sun

2023

Environ Sci Pollut Res

1

0

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Particle bridging owing to the confinement of the pore structure affects the transport and retention of particles in porous media. Particle motion driven by gravities were well investigated, whose filtration is mainly affected by the ratio of the particle diameter to the pore throat size of the medium. However, particles whose motions are driven by the fluid is essential to be investigated for particle separation from the carrying fluid. In this study, the motion of particles was driven by the liquid when passing through a water-saturated porous medium. The fluid-particle flow in a porous medium was modeled using computational fluid dynamics-discrete element method. The motion of particles in the slurry was traced in the porous medium, which enabled particle clogging to be directly precited by the interaction between the particles and pore surfaces by assessing the exact location of each particle. The pressure and flow field of the liquid were investigated, and the variation in flow path owing to particle clogging was predicted. The hydrodynamic study also showed that the Stokes number and particle concentration determined the particle clogging at the pore throats of the porous medium. Increasing the fluid velocity of particles such that the Stokes number was almost equal to 1 increased the separation efficiency of particles. Further increasing the fluid velocity reduced the residence time, which reduced the separation efficiency of the particles.

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Numerical simulation of fine particle liquid–solid flow in porous media based on LBM‐IBM‐DEM

Cited by 10 publications

References 34 publications

Effect of velocity on the clogging of particles in water-saturated porous media using the CFDDEM

Effect of velocity on the clogging of particles in water-saturated porous media using the CFDDEM

Effect of velocity on the clogging of particles in water-saturated porous media using the CFDDEM

Hydrodynamics and effect of velocity on particle filtration due to bridging in water-saturated porous media using CFD–DEM simulation

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