Three dimensional discrete element models for simulating the filling and emptying of silos: Analysis of numerical results

González-Montellano, C.; Gallego, E.; Ramírez-Gómez, Álvaro; Ayuga, Francisco

doi:10.1016/j.compchemeng.2012.02.007

Cited by 76 publications

(34 citation statements)

References 30 publications

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“…The Finite Element Method is a suitable technique to determine the stresses and displacements appeared on the walls or the bulk solid both for filling and discharge of the silo (Ooi and Rotter, 1990;Briassoulis, 2000;Gallego et al, 2010), or to analyze phenomena such as buckling (Iwicki et al, 2011), silo quaking (Wensrich, 2002), silo honking (Wilde et al, 2010), bursting (Piskoty et al, 2005), geometric imperfections (Teng et al, 2005) or eccentric hoppers (Guaita et al, 2003;Vidal et al, 2006). The Discrete Element Method is also increasingly being used for analyzing silos because it allows simulating the individual particles stored in the silo (Kobyłka and Molenda, 2014;Mellmann et al, 2014;Parafiniuk et al, 2013;González-Montellano et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Simulation of silo filling and discharge using ANSYS and comparison with experimental data

Gallego

Ruíz

Rodríguez

2015

Computers and Electronics in Agriculture

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Section: Introductionmentioning

confidence: 99%

Simulation of silo filling and discharge using ANSYS and comparison with experimental data

Gallego

Ruíz

Rodríguez

2015

Computers and Electronics in Agriculture

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“…More recently, the velocity profile for Amaranth grains was found to be closer to a parabolic function than to a Gaussian [45]. Discrete element simulations with corn shaped particles reported slightly larger grain velocity in the center of the hopper compared to the case of beads, but no further analysis of the velocity profiles was presented [46,47].…”

Section: Introductionmentioning

confidence: 99%

Flow of anisometric particles in a quasi-two-dimensional hopper

et al. 2018

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The stationary flow field in a quasi-two-dimensional hopper is investigated experimentally. The behavior of materials consisting of beads and elongated particles with different aspect ratio is compared. We show, that while the vertical velocity in the flowing region can be fitted with a Gaussian function for beads, in the case of elongated grains the flowing channel is narrower and is bordered with sharper velocity gradient. For this case, we quantify deviations from the Gaussian velocity profile. Relative velocity fluctuations are considerably larger and slower for elongated grains.

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“…Various methods for measuring particle density have been reported [17]. Since our particles were prismatic, a particle's volume was determined directly from its dimensions, its mass by using a precision balance, and its density as simply mass/volume.…”

Section: Density Of Wood Particles (ρ)mentioning

confidence: 99%

Experimental and numerical determination of mechanical properties of polygonal wood particles and their flow analysis in silos

et al. 2013

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Responding to a lack in the literature, mechanical properties of polygonal wood particles are determined for use in a discrete element model (DEM) for flow analysis in silos, and some methods are proposed for determining such parameters. The parameters arrived at here have also formed part of the input to the SPOLY software, developed inhouse to compute the DEM model with spheropolyhedron elements. The model is validated using a 2D physical model, where "prismatic" particles with polygonal cross sections are placed inside a silo with variable aperture and hopper angle. Validation includes comparison of flow-rates computed by SPOLY, displacement profiles, and clogging thresholds with experimental results. The good agreement that emerges will encourage future use of miniature triaxial tests, grain-surface profilometry, inclined slope tests, and numerical analysis of the intragranular stresses -toward a direct construction of the contact-deformation relations required in realistic DEM modelling of particle flow with angular-shaped particles.

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Three dimensional discrete element models for simulating the filling and emptying of silos: Analysis of numerical results

Cited by 76 publications

References 30 publications

Simulation of silo filling and discharge using ANSYS and comparison with experimental data

Simulation of silo filling and discharge using ANSYS and comparison with experimental data

Flow of anisometric particles in a quasi-two-dimensional hopper

Experimental and numerical determination of mechanical properties of polygonal wood particles and their flow analysis in silos

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