DEM investigation of particle flow in a vertical rice mill: Influence of particle shape and rotation speed

Zeng, Yong; Mao, Biqi; Li, Anqi; Han, Yingpeng; Jia, Fuguo

doi:10.1016/j.powtec.2021.117105

Cited by 17 publications

(8 citation statements)

References 49 publications

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“…Fig. 3 shows the ball charge motion inside the mill in different characteristics zones and positions: (1) the head represents the highest point of the liner that is still in contact with the particles (also called the apex of charge trajectory); (2) the shoulder represents the region where the cascading material flows down; (3) the dead zone which is colored blue; (4) the bulk toe represents the point of intersection of tumbling charge with mill shell; (5) the impact toe (crushing toe) represents the region where cataracting charge impacts shell or bulk charge; and (6) the cascading charge which is colored red. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…It was showed that the impact energy was influenced by the operating conditions of milling. Zeng et al [5] used DEM approach to investigate the influences of rotation speed and particle shape on flow behaviors in a vertical rice mill. They revealed that effects of ratio on the milling rely on rotation speed and that mean collision rate increase with increasing ratio for a lower rotation speed.…”

Section: Introductionmentioning

confidence: 99%

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DEM Modeling and Optimization of the High Energy Ball Milling

Mhadhbi¹

2022

Design, Construction, Maintenance

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The Discrete Element Method (DEM) is a numerical method for simulating the dynamics of particles processes. This present work focuses on DEM simulations of a scale laboratory planetary ball mill through DEM Altair 2021.2 software to optimize and modulate the milling parameters. The simulation results show a good agreement with the experiments. The numerical model is shown to be a promising tool for the knowledge of dry milling in a planetary ball mill.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

DEM Modeling and Optimization of the High Energy Ball Milling

Mhadhbi¹

2022

Design, Construction, Maintenance

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“…They also concluded that the rotation speed is strongly related to the rotation-revolution speed ratio. Additionally, Zeng et al [42] used DEM simulation to investigate the particle flow in a vertical rice mill. They showed that the influence of aspect ratio on the milling strongly depend on rotation speed.…”

Section: Effect Of the Rotation Speedmentioning

confidence: 99%

Effect of Milling Parameters on DEM Modeling of a Planetary Ball Mill

Mhadhbi¹

2023

AMPC

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The effects of the milling parameters involving shape of powder particles, rotation speed, and ball-to-powder diameter (BPDR) on DEM modeling in the planetary ball mill were investigated. BPDR was varied from 1 to 10. The results revealed that the size and shape of the powder particles do not give a significant change in simulation results when BPDR attains maximum value of 10. The increasing of BPDR leads to the increase of simulation time and size. Hence, the effect of change of the powder particle shape on the calculated data size is not significant. The results also revealed that the increasing rotation speed increases impact energy between powder particles.

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“…In addition, considering the unevenness of the walnut's surface, as shown in Figure 1, it is necessary to paste the walnut specimen on the target plate with a double-sided adhesive to ensure the same loading point for each impact experiment. Previous studies have highlighted the dependence of fracture energy and breakage extent on the direction of loading applied to the walnut's surface [23,24]. Consequently, impact loading was applied along the walnut surface's thickness direction, which holds practical significance for shell breaking in real-world production scenarios.…”

Section: Drop Hammer Impact Experimentsmentioning

confidence: 99%

Study on the Relationship between Crack Initiation and Crack Bifurcation in Walnut Shells Based on Energy

Man,

Li,

Zhang

et al. 2023

Agriculture

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Clarifying the dissipated energy required for crack expansion is an effective way to control material crushing. Therefore, based on the material fracture probability model and fractal theory, the energy range required for crack extension was determined, and the morphology of the cracks was quantified. This study investigates the influence of walnut size on crack propagation characteristics; this includes its effects on the crack initiation threshold energy, representing resistance to crack initiation, and the crack bifurcation threshold energy, representing resistance to crack bifurcation. The results show that crack extension has a well-defined threshold energy below which cracks do not initiate or bifurcate. The size of walnuts significantly impacts crack propagation characteristics, showing that both crack initiation threshold energy and crack bifurcation threshold energy decrease with increasing walnut sizes. In addition, there is a positive correlation function between the crack initiation threshold energy and the crack bifurcation threshold energy. The experimental results can offer fresh insights into material fracture prediction and serve as a reference for numerical simulations.

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DEM investigation of particle flow in a vertical rice mill: Influence of particle shape and rotation speed

Cited by 17 publications

References 49 publications

DEM Modeling and Optimization of the High Energy Ball Milling

DEM Modeling and Optimization of the High Energy Ball Milling

Effect of Milling Parameters on DEM Modeling of a Planetary Ball Mill

Study on the Relationship between Crack Initiation and Crack Bifurcation in Walnut Shells Based on Energy

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