Discussion: A discrete numerical model for granular assemblies

Cundall, P.A.; Strack, Otto D. L.

doi:10.1680/geot.1980.30.3.331

Cited by 447 publications

(150 citation statements)

References 0 publications

Supporting

Mentioning

150

Contrasting

Order By: Relevance

“…The simulation part of this research is based on DEM, which was firstly proposed by Cundall and Strack [26]. This method considers two types of motion of a particle, translation and rotation, which are governed by Newton's second law of motion.…”

Section: Discrete Element Methods (Dem)mentioning

confidence: 99%

Discrete Element Method (DEM) and Experimental Studies of the Angle of Repose and Porosity Distribution of Pellet Pile

Han

Liu

et al. 2019

Processes

View full text Add to dashboard Cite

The lumpy zone in a blast furnace is composed of piles formed naturally during burden charging. The properties of this zone have significant effects on the blast furnace operation, including heat and mass transfer, chemical reactions and gas flow. The properties of the layers mainly include the angle of repose and porosity distribution. This paper introduces two methods, the Discharging Method and the Lifting Method, to study the influence of the packing method on the angle of repose of the pile. The relationships of the angle of repose and porosity with physical parameters are also investigated. The porosity distribution in the bottom of a pile shows a decreasing trend from the region below the apex to the center. The coordination number of the particles is employed to explain this change. The maximum of the frequency distribution of it was found to show a negative correlation to the static friction coefficient, but becomes insensitive to the parameter as the static friction coefficient increases above 0.6.

show abstract

Section: Discrete Element Methods (Dem)mentioning

confidence: 99%

Discrete Element Method (DEM) and Experimental Studies of the Angle of Repose and Porosity Distribution of Pellet Pile

Han

Liu

et al. 2019

Processes

View full text Add to dashboard Cite

show abstract

“…This technique is similar to that used for modeling molecular dynamics and is useful for considering effects such as surface friction, collisional energy losses, boundary forces, and gravity. Much of the pioneering work using the particle dynamics method to simulate the behavior of granular materials was performed by Cundall and Strack [7][8][9][10]. The procedure is an explicit process with sufficiently small time steps taken such that during a single time step disturbances cannot propagate from any particle further than its immediate neighbors.…”

Section: Modeling Particle Dampingmentioning

confidence: 99%

Effectiveness and Predictability of Particle Damping

Fowler¹,

Flint²,

Olson³

2000

View full text Add to dashboard Cite

In this paper, recent results of ongoing studies into the effectiveness and predictability of particle damping are discussed. Efforts have concentrated on characterizing and predicting the behavior of a wide range of potential particle materials, shapes, and sizes in the laboratory environment, as well as at elevated temperature. Methodologies used to generate data and extract the characteristics of the nonlinear damping phenomena are illustrated with interesting test results. Experimental results are compared to predictions from analytical simulations performed with an explicit code, based on the particle dynamics method, that has been developed in support of this work.

show abstract

“…DEM was first proposed by Cundall and Strack [21] and has become one of the most important approaches to study particle motion. It considers a single particle as a unit and simulates the motion trajectory of a single particle by Newton's law to fit the flow of the particle stream.…”

Section: Dem Simulationmentioning

confidence: 99%

Numerical Investigation on Granular Flow from a Wedge‐Shaped Feed Hopper Using the Discrete Element Method

Liu

Hui

et al. 2018

Chem Eng & Technol

View full text Add to dashboard Cite

The discharge process of granular material from a wedge‐shaped feed hopper was numerically simulated using a 3D discrete element method. The effects of particle size, feed pipe, side and rear wedge angle on the discharge performance were investigated in terms of flow pattern, discharge rate, and stability. The results show that with larger particle size the granular flow pattern gradually transforms from mass flow to edge flow where the flow rate decreases and the discharging integrity and stability become worse. The presence of the feed pipe reduces the discharge rate and stability. The increase of the feed pipe diameter will diminish the discharge rate and enhance the discharge stability. Both the side and the rear wedge angle have a certain effect on the discharge performance. The effects of feed pipe, side and rear wedge angle on the discharge stability become more significant with larger particle size.

show abstract

Discussion: A discrete numerical model for granular assemblies

Cited by 447 publications

References 0 publications

Discrete Element Method (DEM) and Experimental Studies of the Angle of Repose and Porosity Distribution of Pellet Pile

Discrete Element Method (DEM) and Experimental Studies of the Angle of Repose and Porosity Distribution of Pellet Pile

Effectiveness and Predictability of Particle Damping

Numerical Investigation on Granular Flow from a Wedge‐Shaped Feed Hopper Using the Discrete Element Method

Contact Info

Product

Resources

About