Development of ADEM-SPH Coupling Model for Analysis of Solid to Liquid Phase Transition Behaviors

Ishihara, Shingo; Kano, Junya

doi:10.2355/isijinternational.isijint-2019-813

Cited by 8 publications

(3 citation statements)

References 45 publications

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“…In previous studies, the authors have developed a coupling model of ADEM (Advanced Distinct Element Method) and SPH (Smoothed Particle Hydrodynamics) and tried to represent the softening and the melting behavior with phase transition. 15) The softening and the melting behaviors due to the phase transition are dealt with ADEM. 16,17) After phase transition, the melt behavior is dealt with SPH.…”

Section: Prediction Of Softening Behavior Of Simulant Sinter Ore By Adem-sph Modelmentioning

confidence: 99%

Prediction of Softening Behavior of Simulant Sinter Ore by ADEM-SPH Model

et al. 2020

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Softening and melting phenomena of burdens in the cohesive zone in the blast furnace are factors that cause the deterioration of gas permeability. Numerical examinations to predict the softening behavior of burdens in the packed bed were performed in this study. In order to represent the softening characteristics of the simulant sinter ore, the simulation of a single pellet load softening test was carried out. The strength properties of the pellets were evaluated by the shrinkage degree in the load softening test.Shrinkage degree of pellets with different basicity and pre-reduction ratio were attempted to reproduce. To represent the softening behavior of the pellet, ADEM (Advanced Distinct Element Method) SPH (Smoothed Particle Hydrodynamics) coupling model was applied. Softening and shrinkage could be represented by decreasing the joint spring coefficient while the pellet was loaded. The relationship between the joint spring coefficient and the temperature was determined to compare the shrinkage degree obtained in the experiment and the simulation. The determined joint spring coefficient was used to predict the softening behavior in the load softening test of a packed bed. The simulation results of the shrinkage degree curve showed good agreement with the experimental results. It was indicated that the softening behavior in the cohesive zone could be predicted by this calculation method.

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Section: Prediction Of Softening Behavior Of Simulant Sinter Ore By Adem-sph Modelmentioning

confidence: 99%

Prediction of Softening Behavior of Simulant Sinter Ore by ADEM-SPH Model

et al. 2020

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“…Powder simulations are commonly utilized in numerous industrial fields such as food, medicine, and ceramics to control powder processes and comprehend the powder phenomena. A representative method for analyzing the powder behavior is the discrete element method (DEM) [1][2][3][4][5][6][7], and the coverage of the analysis region has been expanding [8][9][10][11][12]. In the DEM, the powder behavior is represented by solving Newton's motion equations of each particle composing the powder [13].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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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.

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“…Discrete element method (DEM) [10] calculations have been shown to be effective in describing the behavior of powders in various industrial fields [11][12][13]. Simulation analysis of raw material behavior in each process was performed, and its usefulness was shown [14][15][16][17][18][19][20][21][22]. Nakano et al [23] calculated the granule behavior during the feeding process using DEM.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Effect of Ventilation Bars on the Packing Structure of Sinter Bed by DEM Simulation

2020

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The effect of ventilation bars on the porosity of a sinter bed charged on a sinter machine was investigated. The behavior of the sinter feed was calculated by discrete element method (DEM) simulation. By taking into account the adhesion force, the sinter feed in the wet state was represented and the simulation parameters were determined to reproduce the experimental values of the angle of repose. The porosity of the sinter bed was calculated, and the mechanism of the formation of the packing structure and the cause of the distribution of porosity in each region were clarified. As a result, it is shown that in the case of shear flow, the higher the powder pressure during flow, the higher the porosity.

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Development of ADEM-SPH Coupling Model for Analysis of Solid to Liquid Phase Transition Behaviors

Cited by 8 publications

References 45 publications

Prediction of Softening Behavior of Simulant Sinter Ore by ADEM-SPH Model

Prediction of Softening Behavior of Simulant Sinter Ore by ADEM-SPH Model

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

Analysis of the Effect of Ventilation Bars on the Packing Structure of Sinter Bed by DEM Simulation

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