The effect of particle shape on porosity of swelling granular materials: Discrete element method and the multi-sphere approximation

Sweijen, Thomas; Hassanizadeh, S. Majid; Aslannejad, Hamed; Leszczynski, Szymon

doi:10.1016/j.powtec.2019.09.036

Cited by 15 publications

(4 citation statements)

References 32 publications

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“…This shows that the void fraction of the packed bed increases in the order of Shape A (approximate cylinder) < Shape B (approximate sphere) < Shape C (schistous), which is the same as the previous study results. [35][36][37] Therefore, the shape of the ore needs to be considered in the simulation when the porosity of different ores is mixed and filled in the metallurgical reactor in the subsequent simulation.…”

Section: Influence Of Lump Ore Shape On Average Void Ratiomentioning

confidence: 99%

Influence of Lump Ore Ratio and Shapes on the Particle Flow Behavior Inside the Direct Reduction Shaft Furnace by Discrete Element Modeling Model

Liao

Zong

et al. 2022

steel research int.

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In recent years, with the attention given to hydrogen reduction‐related technologies, the parameter indicators of direct reduction in the shaft furnace have gained importance. Herein, the numerical simulation of the particle flow field in the shaft furnace is investigated with the help of discrete element method (DEM) model. In contrast to the subregional modeling and the single particle shape study of the previous studies, this study innovatively uses the real shape of the particles and the overall structure of the vertical furnace for modeling. The transient characteristics of solid particle flow under ten lump ore ratios and three shapes are considered. The results show that the mass fraction and the shape of lump ore have little effect on the particle falling speed, but have a significant effect on the particle segregation behavior. In addition, the void ratio responds to the permeability condition in the furnace, which is also influenced by the lump ore proportion and shape.

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Section: Influence Of Lump Ore Shape On Average Void Ratiomentioning

confidence: 99%

Influence of Lump Ore Ratio and Shapes on the Particle Flow Behavior Inside the Direct Reduction Shaft Furnace by Discrete Element Modeling Model

Liao

Zong

et al. 2022

steel research int.

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show abstract

“…Eccentricity, or the roundness of a pore, can tell a lot about the crystalline or amorphous nature of the FGPs [37]. Eccentricity values close to one imply a more crystalline FGPs and are favorable for stable behavior of a material [6].…”

Section: Eccentricitymentioning

confidence: 99%

AFIP6-MkII and RERTR-12 Porosity Data Collection and Analysis for Modeling and Simulation

Verner

Keiser

Beeler

et al. 2020

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“…Therefore, the research on the pressure in the process of the compression is helpful to reasonably select the compression process parameters. The simulation analysis of discrete element method (DEM) has been applied to the test of soil, powder, and other granular materials, which provides a reference for stress analysis of the alfalfa compression process (Cundall and Strack 1979;Martina et al 2003;Huang et al 2011;Wang et al 2017;Thomas et al 2019). The DEM simulation for alfalfa needs many parameters, including mechanical parameters of alfalfa straw (Poisson ratio and shear modulus) and contact parameters between alfalfa straw and die (Friction and restitution coefficient) (Wang et al 2016;Lu et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Calibration of parameters for discrete element simulation model for alfalfa with different moisture contents based on angle of repose test

Wang

et al. 2022

BioRes

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During the simulation analysis of the discrete element method (DEM) for the alfalfa compression process, the input parameters in DEM software had a significant effect on simulation results. To obtain simulation parameters of the alfalfa with different moisture contents, a combination of angle of repose tests and simulation optimization design are presented in this paper. The repose angle of the alfalfa with moisture contents of 2.7%, 13.4%, 19.9%, 33.1%, and 74.5% was measured, and the results were 41.99˚, 38.30˚, 47.47˚, 56.31˚, and 63.09˚, respectively. Inclinometer tests, shear test, and restitution test were performed to evaluate the contact parameters. Taking contact parameters as the calibration object, the Plackett-Burman test was used to screen out which parameters had significant influence on the repose angle. The results of variance analysis showed the surface energy was the most significant parameter in the alfalfa repose angle test for each moisture content. Based on the Box-Behnken test, a second-order regression model of repose angle was obtained and the significance parameters were optimized and calibrated. The parameters calibrated in this paper can provide a reference for other simulations of alfalfa utilization.

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The effect of particle shape on porosity of swelling granular materials: Discrete element method and the multi-sphere approximation

Cited by 15 publications

References 32 publications

Influence of Lump Ore Ratio and Shapes on the Particle Flow Behavior Inside the Direct Reduction Shaft Furnace by Discrete Element Modeling Model

Influence of Lump Ore Ratio and Shapes on the Particle Flow Behavior Inside the Direct Reduction Shaft Furnace by Discrete Element Modeling Model

AFIP6-MkII and RERTR-12 Porosity Data Collection and Analysis for Modeling and Simulation

Calibration of parameters for discrete element simulation model for alfalfa with different moisture contents based on angle of repose test

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