Anwendung der Diskrete‐Elemente‐Methode zur Simulation des Verhaltens von Schüttgütern

Weiler, R.; Ripp, Marcus; Dau, Günter; Ripperger, Siegfried

doi:10.1002/cite.200800154

Cited by 12 publications

(6 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, the static friction force, F C , between the two contacting solids is taken into account, which includes the static friction coefficient µ [57]:…”

Section: Jeffrey 1982mentioning

confidence: 99%

Simulative Investigation of Different DLD Microsystem Designs with Increased Reynolds Numbers Using a Two-Way Coupled IBM-CFD/6-DOF Approach

et al. 2022

View full text Add to dashboard Cite

Deterministic lateral displacement (DLD) microsystems are suitable for the size fractionation of particle suspensions in the size range of 0.1 to 10 µm. To be able to fractionate real particles beyond a laboratory scale, these systems have to be designed for higher throughputs. High flow resistances and increasing the clogging of the systems impose substantial challenges for industrial operation. Simulative parameter studies are suitable for improving the design of the systems; for example, the position and shape of the posts. A high-resolution, two-way coupled 6-DOF CFD-DEM approach was used to study the flow and particle behavior of different post shapes (circular and triangular) and post sizes at different Reynolds numbers. The results were compared with the classical first streamline width theory. It was shown that the streamline theory does not account for all effects responsible for the separation. Furthermore, a shift in the critical particle diameter to smaller values could be obtained when increasing the Reynolds number and also when using triangular posts with reduced post sizes compared to the post spacing. These findings can help to improve the efficiency of the systems as the post spacing could be extended, thus reducing the flow resistance and the probability of clogging.

show abstract

“…Furthermore, the static friction force, F C , between the two contacting solids is taken into account, which includes the static friction coefficient µ [57]:…”

Section: Jeffrey 1982mentioning

confidence: 99%

Simulative Investigation of Different DLD Microsystem Designs with Increased Reynolds Numbers Using a Two-Way Coupled IBM-CFD/6-DOF Approach

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Zudem stoßen die Verfahren aufgrund der sich beim Verschleißprozess vom Gesamtsystem ablösenden Partikel sowie bei der Simulation heterogener Werkstoffe (Additive in Polymermatrix) an ihre Grenzen. Demgegenüber weist die Diskrete Elemente Methode (DEM), die ursprünglich zur Simulation granularer Medien entwickelt wurde [2] und zunehmend für kontinuumsmechanische Fragestellungen angewandt wird, deutliche Vorteile auf: Bei der DEM wird das Material durch unabhängige und frei bewegliche Elemente mit individuellen Eigenschaften diskretisiert, die nahezu beliebig miteinander wechselwirken können. Die Wechselwirkungskräfte werden aus den Partikelkontakten berechnet, so dass sich hieraus nach den Newtonschen Gleichungen die Beschleunigungen und durch deren Integration Geschwindig-keiten und Positionen für jeden Zeitschritt ergeben [3].…”

Section: Problemstellungunclassified

Simulating the Wear Behaviour of Cutting Tools using the Discrete Element Method

Mölders

Blömer

Bertling

2011

Chemie Ingenieur Technik

View full text Add to dashboard Cite

To investigate the wear behavior of the cutting tool and the cut abrasive polymer material the dominating tribological processes are studied using the discrete element method (DEM). The required models of the interaction between the particles are calculated from the macroscopic material behavior. The main objective of this work is to develop a material model representing the viscoelastic-plastic behavior of the cut polymer material. The used model is presented and validated in comparison to experimental data

show abstract

“…Calibration for DEM contact parameters is an important activity for a successful replication of the bulk material processing, used in industrial fields. Calibration is performed at a scale of 1:1 by comparison between experimental test conducted and simulated experiments [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…In the scientific literature there are a series of references for tests that can be used in order to determine the friction parameters for non-cohesive bulk materials, angle of repose using the lifting cylinder [1][2][3][4], with the rotating drum [5,6], with the emptying container [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Example for Determining the Physical Parameters Used in DEM Modelling for the Interaction Process between Aggregates and Working Equipment

Nita

Laudacescu²,

Ramadan³

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Modern economies are based on an efficient communications and transport infrastructure. In this context, road networks make an essential contribution to the movement of large quantities of raw materials, finished products as well as to human transport for productive or recreational purposes. In order to maintain the optimal functioning of the road infrastructure, it is necessary to ensure high quality lanes. Road construction and maintenance work play an important role in supporting the ideas mentioned above. The used equipment for production of asphalt pavements (asphalt concrete) and their maintenance are the subject of numerous studies, proving the interest for this field. The authors of paper: An Example for Determining the Physical Parameters Used in DEM (Discrete Element Method) Modelling for the Interaction Process between Aggregates and Working Equipment, present an example for determining physical parameters that are used in specific numerical modelling of operation equipment which interacts with structures (drum dryer, mixer for concrete production and milling machine for asphalt pavement). In order to model the real phenomena in which granular materials are involved (cereals, mineral aggregates, and other powdery substances) it is very important to use not only appropriate software but also to use primary data to accurately characterize the phenomena. The sizes that characterize the interaction between particles and between particles and the space in which they move are very important. The study covers any type of granular material of mineral origin, in particular mineral aggregates used in the manufacture of concrete, cement or asphalt.

show abstract

Anwendung der Diskrete‐Elemente‐Methode zur Simulation des Verhaltens von Schüttgütern

Cited by 12 publications

References 8 publications

Simulative Investigation of Different DLD Microsystem Designs with Increased Reynolds Numbers Using a Two-Way Coupled IBM-CFD/6-DOF Approach

Simulative Investigation of Different DLD Microsystem Designs with Increased Reynolds Numbers Using a Two-Way Coupled IBM-CFD/6-DOF Approach

Simulating the Wear Behaviour of Cutting Tools using the Discrete Element Method

An Example for Determining the Physical Parameters Used in DEM Modelling for the Interaction Process between Aggregates and Working Equipment

Contact Info

Product

Resources

About