Modelling of the flow of ellipsoidal particles in a horizontal rotating drum based on DEM simulation

2017 ◽  
Vol 172 ◽  
pp. 636-651 ◽  
Author(s):  
Huaqing Ma ◽  
Yongzhi Zhao
Keyword(s):  
Rotating Drum ◽  
Dem Simulation ◽  
Ellipsoidal Particles

Sensitivity analysis of particle contact parameters for DEM simulation in a rotating drum using response surface methodology

2020 ◽  
Vol 362 ◽  
pp. 604-614 ◽  
Author(s):  
Wenjie Rong ◽  
Yuqing Feng ◽  
Phil Schwarz ◽  
Tarabordin Yurata ◽  
Peter Witt ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Rotating Drum ◽  
Dem Simulation ◽  
Particle Contact ◽  
Contact Parameters

Flow regimes of cohesionless ellipsoidal particles in a rotating drum

2019 ◽  
Vol 354 ◽  
pp. 174-187 ◽  
Author(s):  
S.Y. He ◽  
J.Q. Gan ◽  
D. Pinson ◽  
A.B. Yu ◽  
Z.Y. Zhou
Keyword(s):  
Flow Regimes ◽  
Rotating Drum ◽  
Ellipsoidal Particles

2D DEM simulation of particle mixing in rotating drum: A parametric study

Particuology ◽  
2010 ◽  
Vol 8 (2) ◽  
pp. 141-149 ◽  
Author(s):  
Yong Xu ◽  
Chunhui Xu ◽  
Zhe Zhou ◽  
Jing Du ◽  
Daping Hu
Keyword(s):  
Parametric Study ◽  
Rotating Drum ◽  
Dem Simulation ◽  
Particle Mixing

Influence of Particle Shape and Contact Parameters on DEM-Simulated Bulk Density of Wheat

2020 ◽  
Vol 63 (6) ◽  
pp. 1657-1672
Author(s):  
Marvin C. Petingco ◽  
Mark E. Casada ◽  
Ronaldo G. Maghirang ◽  
Oladiran O. Fasina ◽  
Zhengpu Chen ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Bulk Density ◽  
Particle Shape ◽  
Static Friction ◽  
Rolling Friction ◽  
Particle Model ◽  
Dem Simulation ◽  
Aspect Ratios ◽  
Ellipsoidal Particles ◽  
Contact Parameters

HighlightsDecreasing aspect ratio and improved geometrical smoothness of particles increased DEM-predicted bulk density of wheat.Among the three particle models, the 5-sphere ellipsoidal particle was the best option to represent wheat particles, as indicated by the simulated bulk densities that best agreed with the experiments.Among the contact parameters, the wheat-to-wheat coefficient of static friction and wheat-surface coefficient of rolling friction had the greatest influence on simulated bulk density.Abstract. The discrete element method (DEM) has been shown to be an effective tool for simulating the behavior of granular material. The accuracy of simulations depends highly on the contact models, particle physical parameters, and contact parameters used. The objectives of this study were to determine the influence of particle shape and contact parameters on simulated wheat bulk density and to develop an effective wheat particle model for DEM simulation of filling a container using EDEM software. Grain characteristics, including single-kernel weight, kernel density, kernel dimensions, aspect ratio, and bulk density, were determined for three size fractions of wheat used in the experiments. Three categories of particle models (5-sphere pseudo-ellipsoidal, 7-sphere pseudo-ellipsoidal, and ASG-generated) with varying aspect ratios and geometrical smoothness were tested in the simulations. Results showed that DEM-simulated bulk density of wheat increased with lower aspect ratio and greater geometrical smoothness of pseudo-ellipsoidal particles (7-sphere versus 5-sphere). Increasing the number of spheres to approximately 30 for better representation of wheat kernel shape, using ASG-generated particles, did not reproduce the trend of greater simulated bulk density seen in the experiments. Among the six contact parameters, the wheat-wheat coefficient of static friction and wheat-surface coefficient of rolling friction had the most significant effect on the simulated bulk density. Among the different sets of particle models, the 5-sphere pseudo-ellipsoidal particles, having aspect ratios close to that of wheat kernels in each size fraction, were found to be the most practical and appropriate particle model for use in DEM simulation of wheat bulk density. This study contributes to better understanding of the influence of particle shape and contact parameters on DEM-simulated bulk density and provides a calibrated particle model for use in simulating container filling operations. Keywords: Bulk density, Contact parameters, DEM, Particle shape, Wheat.

A Discrete Element Method Study of Monodisperse Mixing of Ellipsoidal Particles in a Rotating Drum

2020 ◽  
Vol 59 (27) ◽  
pp. 12458-12470 ◽  
Author(s):  
Siyuan He ◽  
Jieqing Gan ◽  
David Pinson ◽  
Aibing Yu ◽  
Zongyan Zhou
Keyword(s):  
Discrete Element Method ◽  
Discrete Element ◽  
Rotating Drum ◽  
Ellipsoidal Particles ◽  
Element Method

UnresolvedCFD-DEM simulation of spherical and ellipsoidal particles in conical and prismatic spouted beds

2021 ◽  
Author(s):  
A. Atxutegi ◽  
P. Kieckhefen ◽  
S. Pietsch ◽  
R. Aguado ◽  
M. Olazar ◽  
...  
Keyword(s):  
Dem Simulation ◽  
Ellipsoidal Particles ◽  
Spouted Beds
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