Coarse grain model for DEM simulation of dense and dynamic particle flow with liquid bridge forces

2018 ◽  
Vol 132 ◽  
pp. 1060-1069 ◽  
Author(s):  
Ei L. Chan ◽  
Kimiaki Washino
Keyword(s):  
Liquid Bridge ◽  
Particle Flow ◽  
Coarse Grain ◽  
Dem Simulation ◽  
Grain Model

scholarly journals Development of Simpler Coarse-Grain Model for Analyzing Behavior of Particles in Fluid Flow

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1098
Author(s):  
Kizuku Kushimoto ◽  
Kaya Suzuki ◽  
Shingo Ishihara ◽  
Rikio Soda ◽  
Kimihiro Ozaki ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Particle Density ◽  
Physical Phenomenon ◽  
Particle Diameter ◽  
Coarse Grained ◽  
Coarse Grain ◽  
Dem Simulation ◽  
Particle Behavior ◽  
Fluid Drag ◽  
Grain Model

A new simpler coarse-grain model (SCG) for analyzing particle behaviors under fluid flow in a dilute system, by using a discrete element method (DEM), was developed to reduce calculation load. In the SCG model, coarse-grained (CG) particles were enlarged from original particles in the same way as the existing coarse-grain model; however, the modeling concept differed from the other models. The SCG model focused on the acceleration by the fluid drag force, and the CG particles’ acceleration coincided with that of the original particles. Consequently, the model imposed only the following simple rule: the product of particle density and squared particle diameter is constant. Thus, the model had features that can be easily implemented in the DEM simulation to comprehend the modeled physical phenomenon. The model was validated by comparing the behaviors of the CG particles with the original particles in the uniform and the vortex flow fields. Moreover, the usability of the SCG model on simulating real dilute systems was confirmed by representing the particle behavior in a classifier. Therefore, the particle behavior in dilute particle-concentration systems would be analyzed more simply with the SCG model.

Coarse-Grain Model Simulations of Nonequilibrium Dynamics in Heterogeneous Materials

2014 ◽  
Vol 5 (12) ◽  
pp. 2144-2149 ◽  
Author(s):  
John K. Brennan ◽  
Martin Lísal ◽  
Joshua D. Moore ◽  
Sergei Izvekov ◽  
Igor V. Schweigert ◽  
...  
Keyword(s):  
Heterogeneous Materials ◽  
Nonequilibrium Dynamics ◽  
Coarse Grain ◽  
Model Simulations ◽  
Grain Model

Coarse-grain model for internal energy excitation and dissociation of molecular nitrogen

2012 ◽  
Vol 398 ◽  
pp. 90-95 ◽  
Author(s):  
Thierry E. Magin ◽  
Marco Panesi ◽  
Anne Bourdon ◽  
Richard L. Jaffe ◽  
David W. Schwenke
Keyword(s):  
Internal Energy ◽  
Molecular Nitrogen ◽  
Coarse Grain ◽  
Energy Excitation ◽  
Grain Model

Coarse-Grain Model for Glucose, Cellobiose, and Cellotetraose in Water

2011 ◽  
Vol 7 (7) ◽  
pp. 2137-2150 ◽  
Author(s):  
Antti-Pekka Hynninen ◽  
James F. Matthews ◽  
Gregg T. Beckham ◽  
Michael F. Crowley ◽  
Mark R. Nimlos
Keyword(s):  
Coarse Grain ◽  
Grain Model

Biomass steam gasification in bubbling fluidized bed for higher-H2 syngas: CFD simulation with coarse grain model

2019 ◽  
Vol 44 (13) ◽  
pp. 6448-6460 ◽  
Author(s):  
Tian Qi ◽  
Tingzhou Lei ◽  
Beibei Yan ◽  
Guanyi Chen ◽  
Zhongshan Li ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Cfd Simulation ◽  
Steam Gasification ◽  
Coarse Grain ◽  
Bubbling Fluidized Bed ◽  
Grain Model

Coarse-grain model of the benzene ring with para-substituents in the molecule

2012 ◽  
Vol 136 (9) ◽  
pp. 094102 ◽  
Author(s):  
Vladimir S. Neverov ◽  
Andrei V. Komolkin
Keyword(s):  
Benzene Ring ◽  
Coarse Grain ◽  
Grain Model
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