Estimating the segregation of a granular bed subjected to vibration in various modes

Dai, Bei‐Bing; Yuan, Wei‐Hai; Liu, Jian K.; Liu, Feng-Tao; Chang, Dan

doi:10.1016/j.apt.2021.03.001

Cited by 11 publications

(3 citation statements)

References 83 publications

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“…The DEM program particle flow code (PFC) has been shown to be a powerful numeric tool to investigate the mechanical behavior of granular materials (Dai et al, 2015(Dai et al, , 2019(Dai et al, , 2021Gu et al, 2015Gu et al, , 2017Li & Yu, 2010;Yang & Dai, 2011). We used PFC3D in this study to mimic the formation of scree slopes and micromechanically analyze the effect of particle attributes on the formation and characteristics of scree slopes.…”

Section: Numerical Model Setupmentioning

confidence: 99%

“…The phenomenon that particles of dissimilar properties segregate is widely present in geophysical mass flows such as landslides and snow avalanches (Gray & Kokelaar, 2010; De Hass et al., 2015; Zhou et al., 2020) and in granular flows associated with industrial processes such as mining and bulk solids conveying (Saxton et al., 2008; Dai et al., 2021). Coarse particles tend to preferentially migrate towards the flow front, leading to a specific structure in the flow deposits: coarse particle domination at the front of the deposit and small particle domination at the rear (Gray & Kokelaar, 2010; Zhou et al., 2020) (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

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Particle Sorting in Scree Slopes: Characterization and Interpretation From the Micromechanical Perspective

Dai

Zhong

et al. 2022

JGR Earth Surface

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A scree (talus) slope is characterized by an inclined accumulation of rock debris sourced from the upper part of a weathered cliff at the foot of the cliff. Scree slopes are widely encountered in high, frigid mountainous regions and have some interesting geomorphic features (Caine, 1969;Kirkby & Statham, 1975;Sass, 2006). The formation of scree slopes, as shown in Figure 1, is a complex process that involves the detachment, descent, movement, and accumulation of weathered and failed rock. The mechanics of this dynamic process have been of long-standing interest in a number of fields (e.g.,

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Section: Numerical Model Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Particle Sorting in Scree Slopes: Characterization and Interpretation From the Micromechanical Perspective

Dai

Zhong

et al. 2022

JGR Earth Surface

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“…Dynamic particle or discrete component system and simulations from Monte-Carlo are utilized as computer methods [8,9,10]. Granular materials consisting of particle sizes, densities, forms or surface characteristics appear to split into outward disturbances like vibration [11] and shear. In many sectors, including chemicals, food, mining and pharmaceuticals and numerous natural occurrences, granular segregation is omnipresent [12] in various processes.…”

Section: Introductionmentioning

confidence: 99%

A review on flow and segregation of granular materials during heap formation

Sardare,

Gharat

2024

J. Phys.: Conf. Ser.

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Segregation is an important process mainly used in industries during the flow of granular materials. A granular medium is repeatedly collected particles that have different properties like size, shape, and density. Heap formation in the industry occurs if particles with various sizes, forms, material densities or surface properties are made of bulk materials, then they spatially separate during formation of the heap. This paper provides a detailed understanding of segregation dynamics in granular flows within industrial processes. Focusing on the intricate interplay of particle characteristics, mixing phenomena, and heap formation methodology, the review delves into the essential aspects influencing the spatial separation of particles. Granular media, comprising particles with distinct properties such as size, shape, and density, undergo segregation during the flow processes commonly employed in industries. The formation of heaps becomes a consequential outcome when bulk materials consist of particles exhibiting variations in size, shape, material density, or surface properties. The comprehensive analysis within this review encompasses detailed insights into granular material flow, the intricacies of mixing, the mechanisms of segregation, and the profound effects of particle characteristics on these processes. Additionally, the paper scrutinizes various methodologies employed in industrial settings for heap formation, providing a holistic perspective on the key factors influencing segregation dynamics in granular flows. This review aims to contribute valuable insights to researchers, engineers, and practitioners involved in the optimization and control of granular material handling within diverse industrial applications.

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3D DEM investigation on percolation of lubricant particles during uniaxial metal powder compaction

Zhang,

Xiao,

Yuan

et al. 2024

Granular Matter

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Estimating the segregation of a granular bed subjected to vibration in various modes

Cited by 11 publications

References 83 publications

Particle Sorting in Scree Slopes: Characterization and Interpretation From the Micromechanical Perspective

Particle Sorting in Scree Slopes: Characterization and Interpretation From the Micromechanical Perspective

A review on flow and segregation of granular materials during heap formation

3D DEM investigation on percolation of lubricant particles during uniaxial metal powder compaction

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