On the morphology and pressure-filtration characteristics of filter cake formation: Insight from coupled CFD–DEM simulations

Yin, Tong; Zhang, Zixin; Huang, Xin; Shire, Thomas; Hanley, Kevin J.

doi:10.1016/j.tust.2021.103856

Cited by 26 publications

(8 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mineral composition of expansive clay in waste stone powder was determined according to the "Methylene Blue Test Standard Regulations" (BS-EN 933-9:1999), and the MBVF value was slightly greater than 1.4 and did not exceed the standard specification, and the particles qualitatively contained a small amount of expansive clay. Expansive clay has a strong cation exchange capacity, and the viscosity and strength of expansive clay increase significantly after adsorption of water molecules [21,22] , and the pulping rate is very high as a high-quality slurry clay [23] . Therefore, the slurry contains a small amount of expansive clay, which is conducive to the development of slurry properties [24] .…”

Section: Test Samplesmentioning

confidence: 99%

Study on the Properties of Waste Stone Powder-clay Slurry based on the Influence of Filter Press

Chen,

Jiao

et al. 2024

FSE

View full text Add to dashboard Cite

A grouting material pressure effect simulation device (FSD) was used to study the performance of grout considering grouting pressure, slurry rheology, clay ash, slurry concentration and particle size composition of waste stone powder (FSD influencing factors). After the effect of filter pressing, the alkaline environment of the slurry became stronger, the number of active particles increased, and the CaCO3 and clay crystals were fully agglomerate, and the degree of crystallization increased. The cation exchange capacity increased, and the formation of calcium-silicon-aluminum matrix phase and aluminosilicate aggregates increased. The surface water between the matrix particles supports the crystal layer, and the plastic viscosity and yield stress are reduced. The free calcium oxide decreased, and the consolidation shrinkage rate after slurry hardening was less than 1%. The water-cement ratio is reduced, and the total time for slurry to be poured into the fracture to consolidate and form a mold and intermittent is shortened. The use of waste stone powder and clay in the coal mine grouting industry can not only reduce project costs, but also reduce soil erosion and soil pollution.

show abstract

Section: Test Samplesmentioning

confidence: 99%

Study on the Properties of Waste Stone Powder-clay Slurry based on the Influence of Filter Press

Chen,

Jiao

et al. 2024

FSE

View full text Add to dashboard Cite

show abstract

“…The most commonly recognized mechanism is physical clogging by particle size. 13,18,45 The diameter of particles in the slurry mixture is larger than the pore size of the infiltrated medium when the size ratio of slurry to sand particles is relatively large, such as when the slurry contains fine sand infiltration to the sand strata. This results in slurry particles being filtered directly out of the solution and unable to pass through the sand column.…”

Section: Slurry Particle Clogging Mechanismmentioning

confidence: 99%

“…17 Given the computational scale of slurry infiltration simulations, unresolved methods are widely adopted. Yin et al 18 and Zhang et al 14 simulated slurry infiltration and identified four types of filter cake formation and find the void throat is closely related to the infiltration process. They also proposed the law of pressure variation within the filter cake.…”

Section: Introductionmentioning

confidence: 99%

Hydromechanical analysis of slurry infiltration with coupled CFD–DEM method

Cheng,

Wang,

Wang

et al. 2024

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

The tunnel face stability is closely related to the migration behavior and clogging mechanism of the slurry particles in granular soils, which is not yet fully understood. In this study, the coupled computational fluid dynamics–discrete element method (CFD–DEM) is adopted to investigate the infiltration behavior of slurry at the particle scale. The full Johnson–Kendall–Roberts (JKR) contact model describing interparticle behavior that accounts for cohesion present even when particles are microseparated after collisions is adopted for clay‐clay or clay‐sand particles and the Hertz–Mindlin model is used for sand‐sand particles. Through simulations, the mechanism of the slurry particle's blockage is identified as physical, frictional and cohesive modes, and slurry particle migration usually undergoes the process of aggregation‐destruction‐migration‐reassembly. Meanwhile, the influences of pressure, cohesive force, and particle shape on infiltration are also analyzed. The results indicate that high pressure lengthens the infiltration path and increases the infiltration rate. The increase in cohesion enhances the effective clogging of the sand column by the slurry, and particles with smaller sphericity are more likely to clog in the sand column. These findings may enhance our understanding of the slurry infiltration mechanism and its practical application in TBM tunneling.

show abstract

“…Zhang et al 24 simulated cohesive slurry filtration under different conditions of pressure and slurry physical properties. Yin et al 25 investigated the influence of particle-scale geometric characteristics of the filter on cohesive slurry filtration, and found that the effectiveness of the filter can be evaluated by the median constriction size formed by the filter and the infiltrating slurry particles. However, the combined influence of flow and geometric conditions on the particle-scale filtration behaviour in granular soils are yet to be fully explored using CFD-DEM.…”

Section: Introductionmentioning

confidence: 99%

Influence of hydraulic and geometric conditions on the early stages of the filtration process in idealised granular soils comprising spherical particles

Zhang

Sufian

Scheuermann

2023

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

The early stages of particle‐scale filtration in idealised granular soils were investigated using coupled Computational Fluid Dynamics and Discrete Element Method. Filtration simulations were conducted for assemblies of finer base particles underlying coarser filter particles with upward seepage flow perpendicular to the base‐filter interface. A wide range of size ratios that covered the complete spectrum of filtration behaviours were considered, along with different ramping accelerations for seepage flow to investigate the combined influence of geometric characteristics and hydraulic loading. The influence of flow conditions and size ratios on the time‐dependent infiltration depth of transported base particles was observed to be universal with respect to a newly proposed dimensionless time parameter. The susceptibility to filtration during the early stages was quantitatively investigated with the number of infiltrating base particles and the filling degree of pores within the filter. The susceptibility during the early stages was shown to have a strong correlation with pore space geometry at the filter boundary, which was also reflected by the maximum pore filling degree of the filter. While filter susceptibility has been conventionally evaluated by the size ratio of the assembly, the consideration of the pore space geometry at the filter boundary provided an alternate approach of evaluating local filter susceptibility.

show abstract

On the morphology and pressure-filtration characteristics of filter cake formation: Insight from coupled CFD–DEM simulations

Cited by 26 publications

References 34 publications

Study on the Properties of Waste Stone Powder-clay Slurry based on the Influence of Filter Press

Study on the Properties of Waste Stone Powder-clay Slurry based on the Influence of Filter Press

Hydromechanical analysis of slurry infiltration with coupled CFD–DEM method

Influence of hydraulic and geometric conditions on the early stages of the filtration process in idealised granular soils comprising spherical particles

Contact Info

Product

Resources

About