Discrete element method (DEM) simulation of single grouser shoe-soil interaction at varied moisture contents

2021 ◽  
Vol 191 ◽  
pp. 106538
Author(s):  
Sher Ali Shaikh ◽  
Yaoming Li ◽  
Zheng Ma ◽  
Farman Ali Chandio ◽  
Mazhar Hussain Tunio ◽  
...  
Keyword(s):  
Discrete Element Method ◽  
Discrete Element ◽  
Dem Simulation ◽  
Moisture Contents ◽  
Element Method

Jaw Crusher Based on Discrete Element Method

2013 ◽  
Vol 312 ◽  
pp. 101-105
Author(s):  
Fu Sheng Mu ◽  
Hui Li ◽  
Xing Xue Li ◽  
Hong Zhi Xiong
Keyword(s):  
Energy Consumption ◽  
Discrete Element Method ◽  
Discrete Element ◽  
Working Process ◽  
Element Analysis ◽  
Dem Simulation ◽  
Force Condition ◽  
Jaw Crusher ◽  
Set Up ◽  
Element Method

In order to analyze the force condition and crushing power of crusher teeth plate, the discrete element method models of jaw crusher and double-cavity jaw crusher are set up respectively using EDEM, a kind of software for discrete element analysis. Meanwhile, the working process, the loading force on the teeth plate and crushing power are simulated. The results show that: the rationality of the DEM simulation is declared, and the crushing process of the particles is also shown intuitively. The loading force condition and the crushing power of the moving jaw teeth plate serve as basis for its abrasion and energy consumption respectively.

Study on the Particle Behavior in a Screw Conveyer System by the Discrete Element Method

2011 ◽  
Author(s):  
Yusuke Shigeto ◽  
Mikio Sakai ◽  
Shin Mizutani ◽  
Seiichi Koshizuka ◽  
Shuji Matsusaka
Keyword(s):  
Discrete Element Method ◽  
Large Scale ◽  
Discrete Element ◽  
Dem Simulation ◽  
Memory Space ◽  
Industrial Systems ◽  
Simulation Techniques ◽  
Conveyer System ◽  
Grain Model ◽  
Element Method

Large amount of particles are used in the industrial systems. Numerical analyses of these systems are expected to reduce designing cost. However the numerical analysis of powder is not used practically, because it requires high calculation cost which grows up with the number of particles. Besides, there are memory consumption problem which is required for calculation space. In this paper, the parallel simulation techniques of the Discrete Element Method (DEM) on multi-core processors are described. In the present study, it is shown that the algorithm enables all the processes of the DEM to be executed parallel. Moreover, a new algorithm which makes the memory space usage effectively and accelerates the calculation speed is proposed for multi-thread parallel computing of the DEM. In the present study, the memory space usage is shown to be reduced drastically by introducing this algorithm. In addition, the coarse grain model which emulates original particles with less calculation particles is applied in order to reduce calculation cost. For the practical usage of the DEM in industries, the simulation is performed in a large-scale powder system which possesses a complicated drive unit. In the current study, it is shown that the large scale DEM simulation of practical systems is enabled to be executed by our proposing algorithms.

Discrete element method (DEM) simulation and validation of a screw feeder system

2016 ◽  
Vol 287 ◽  
pp. 131-138 ◽  
Author(s):  
D. Kretz ◽  
S. Callau-Monje ◽  
M. Hitschler ◽  
A. Hien ◽  
M. Raedle ◽  
...  
Keyword(s):  
Discrete Element Method ◽  
Discrete Element ◽  
Dem Simulation ◽  
Screw Feeder ◽  
Simulation And Validation ◽  
Element Method

Geometrically exact discrete-element-method (DEM) simulation on the flow and mixing of sphero-cylinders in horizontal drums

2018 ◽  
Vol 336 ◽  
pp. 415-425 ◽  
Author(s):  
Fuhai Yu ◽  
Shuai Zhang ◽  
Guangzheng Zhou ◽  
Yun Zhang ◽  
Wei Ge
Keyword(s):  
Discrete Element Method ◽  
Discrete Element ◽  
Dem Simulation ◽  
Element Method

Discrete Investigation of Thermal Relaxation in Packed Beds

2010 ◽  
Author(s):  
Fabian Weigler ◽  
Mirko Peglow ◽  
Evangelos Tsotsas
Keyword(s):  
Discrete Element Method ◽  
Structural Phase ◽  
Thermal Relaxation ◽  
Discrete Element ◽  
Contactless Measurement ◽  
Heating Process ◽  
Packed Beds ◽  
Dem Simulation ◽  
Set Up ◽  
Element Method

Granular materials are of great importance industrially, yet not completely understood in regard of their thermal behavior in mixers, dryers, reactors and other types of contact processing equipment. In such equipment heat is supplied to a mechanically agitated bed of particles from heating surfaces. Continuum models are used traditionally for the description of the process. An example is the penetration model (PM) which describes the heating process of the particles as a sequence of penetration periods and mixing steps. As an alternative to the PM the thermal discrete element method (DEM) was applied in newer work. To validate the DEM simulation an experimental set-up and a new contactless measurement method were developed, and applied to the thermal relaxation in packed beds composed by a fraction of warm and a fraction of cold particles. In these thermal investigations aluminum spheres which are coated with thermochromic pigments are used. Thermochromic pigments are pigments that change color with heat supply as a result of a structural phase transition. Such a measuring technology allows for the experimental determination of temperature distributions in the disperse phase and thus, for a quantitative comparison with the results of the thermal DEM simulation. In this work the experimental results of 2D, 3D, stagnant and agitated beds are presented and compared with corresponding numerical computations using the discrete element method. Still existing deviations are partially caused by undesired heat losses and will be discussed in the contribution.

scholarly journals Analysis of the mixing of solid particles in the slant cone and ploughshare mixers via Discrete Element Method (DEM)

2021 ◽  
Author(s):  
Seyed-Meysam Seyed-Alian
Keyword(s):  
Discrete Element Method ◽  
Discrete Element ◽  
Solid Particles ◽  
Mixing Efficiency ◽  
Dem Simulation ◽  
Initial Loading ◽  
Positron Emission ◽  
Simulation Results ◽  
Fill Level ◽  
Element Method

Discrete element method (DEM) was employed to characterize the mixing of the solid particles in two different types of the powder blenders. In the first part of this study, DEM was used to investigate the effects of initial loading, drum speed, fill level, and agitator speed on the mixing efficiency of a slant cone mixer. DEM simulation results were in good agreement with the experimentally determined data, both qualitatively and quantitatively. In the second part of this study, DEM was employed to characterize the mixing of the solid particles in a Ploughshare mixer. To validate the model, the simulation results were compared to the positron emission particle tracking (PEPT) data reported in the literature. The validated DEM was then utilized to calculate the mixing index as a function of the initial loading, plough rotational speed, fill level, and particle size for a ploughshare mixer.

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