Comparison of different capillary bridge models for application in the discrete element method

Weakly wetted granular material is the subject of many studies. Several formulations were proposed to calculate the capillary forces between wet particles. In this paper some of such models have been implemented in a DEM-framework, and simulation results were compared to experimental measurements. A...

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Bibliographic Details
Published inarXiv.org
Main Authors Gladkyy, Anton, Schwarze, Ruediger
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 12.09.2014
Subjects
Beads
Computer simulation
Discrete element method
Formulations
Granular materials
Mathematical models
Moisture content
Parameters
Physics - Soft Condensed Matter
Shear viscosity
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Summary:Weakly wetted granular material is the subject of many studies. Several formulations were proposed to calculate the capillary forces between wet particles. In this paper some of such models have been implemented in a DEM-framework, and simulation results were compared to experimental measurements. Also, the influence of capillary model type on macro parameters like local shear viscosity and cohesive parameters of sheared material have been investigated through the simulation of spherical beads using a DEM-model of a split-bottom shear-cell. It was concluded that the water content, simulated with the help of capillary bridge models, changes the macro-properties of the simulated granular material. Different capillary bridge models do not influence the macroscopic results visibly.
ISSN:2331-8422
DOI:10.48550/arxiv.1403.7926