Volume of Suspension That Flows through a Small Orifice Before It Clogs

Goldsztein, Guillermo H.

doi:10.1137/040616164

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Discrete Stochastic Model1

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2012

2022

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Cited by 8 publications

(2 citation statements)

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“…We first rely on a discrete stochastic model following the approach developed in Refs. [29] and [68] 29,68 . To do so, we generate numerically a random distribution of particles with a surface fraction φ in the channel.…”

Section: Discrete Stochastic Modelmentioning

confidence: 99%

Influence of the solid fraction on the clogging by bridging of suspensions in constricted channels

2022

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Section: Discrete Stochastic Modelmentioning

confidence: 99%

Influence of the solid fraction on the clogging by bridging of suspensions in constricted channels

2022

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“…It is shown that both samples are susceptible to internal erosion. In this study, the suspension particles are assumed to come from the upstream soil (Goldsztein, 2005). The suspension particle size distribution in the influent is the same as that of the fine fraction of the sample.…”

Section: Simulation Programmentioning

confidence: 99%

A coupled CFD–DEM investigation of internal erosion considering suspension flow

et al. 2021

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The influence of two-phase flows containing suspension particles, which are common in nature, on internal erosion with coupling effect of clogging remains unclear. This paper presents a three-dimensional coupled discrete element method and computational fluid dynamics (CFD-DEM) analysis of internal erosion considering different concentrations of suspension C (i.e., mass of the suspended particles in unit volume of fluid) in gap-graded granular soils with different fine fraction Fc (i.e., the percentage by mass of the fine particles in the gap-graded sample). The influences of C and Fc on the erosion and clogging behavior of soils are investigated from both the macroscopic and microscopic perspectives. It is found that for gap-graded samples being under-filled with Fc=15%, the suspension flow (i.e., influent fluid with suspending particles) decreases the cumulative eroded fine particle loss and the increasing rate of soil hydraulic conductivity due to clogging at the top of the sample. The degree of clogging is found to jointly be determined by both constriction size distribution and the suspension concentration. Clogging in a local area usually occurs with the formation of the clusters which has a high resistance to the drag force applied by the fluid flow.

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