Improving mixture of grains by using bi-dimensional Galton boards

Benito, Jesica Gisele; Ippolito, I.; Vidales, Ana María

doi:10.1016/j.physa.2008.05.003

Cited by 7 publications

(7 citation statements)

References 13 publications

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“…After innumerable nail collisions, it was piled up at the bottom. The final slot that a single ball is falling into is unintentional, but the majority of balls eventually fall into the center slots, with a tiny number of balls falling into slots on both sides [22][23][24][25]. Similar to balls moving in nails, bubbles in the spaces of soil particles eventually overflow the water in large quantities from the central area.…”

Section: Resultsmentioning

confidence: 99%

A 3D DEM Model for Air Sparging Technology in the Saturated Granular Soils

Liu

et al. 2022

Front. Phys.

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This work provides a three-dimensional discrete element simulation (DEM) model to study the air sparging technology. The simulations have taken into account the multi-phases of bubble (gas) - fluid (water) - soil (solid) particles. Bubbles are treated as discrete individual particles, with buoyancy and drag forces applied to bubbles and soil particles. The trajectory of each discrete bubble particle can be tracked using the discrete element model. It is found that the diffusion of the whole bubble is inverted conical though the motion behavior of a single bubble particle is random. Furthermore, the distribution of the radius of influence (ROI) is not uniform. The bubbles become more concentrated as in the center of the inverted cone. The number of bubbles dissipated from the water surface is normally distributed. The DEM simulation is a novel approach to studying air sparging technology that can provide us a deeper insight into bubble migration at the microscopic level.

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Section: Resultsmentioning

confidence: 99%

A 3D DEM Model for Air Sparging Technology in the Saturated Granular Soils

Liu

et al. 2022

Front. Phys.

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“…This system mixes the grains by a diffusion mechanism described in Refs. [11,12]: the grains experience indeed random motions in the horizontal plane due to their collisions with the wires. After a wedge shaped transition the grains move into a second device (2DM) with a rectangular section (32 × 5 mm) acting as a 2D mixer and a distributor.…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

Dynamical effects in the segregation of granular mixtures in quasi 2D piles

et al. 2015

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“…3 shows an exemplary result with seven foregoing decisions, where a positive kappa distribution (µ = 0, σ = 1, κ = 4) is formed by the formalism in Eq. (14), choosing a board with 100 rows, a 1 = 0.07 and a 2 = 0.06.…”

Section: Binomial Approach-the Galton Boardmentioning

confidence: 99%

“…The implications of their findings are in the mixing of two species of particles using the Galton board, as described in Refs. [11,14]. Under certain circumstances a Galton board can be used as a segregation device, as discussed in Ref.…”

Section: Introductionmentioning

confidence: 99%