Interparticle Forces for Granular Dynamics (or DEM ) by MD Simulations

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One of the ingredients in Granular Dynamics (or DEM) is a description of interparticleforces. In this paper the effect of surface roughness o­n Hamaker and liquid bridgeinteractions is investigated. Three different models are used (excluded volume, stochasticroughness and explicit asperities). In general, the latter two give similar results. Roughnessdecreases interactions up to several orders of magnitude for rigid surfaces. To validate theanalytical results o­n liquid bridge interactions at low humidity, molecular dynamicssimulations were also performed o­n model systems.



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Author(s): 
Apol, M.E.F. Berendsen, H.J.C. Mark, A.E. and Hoffmann A.C.
Journal: 
Proceedings WCPT4, the Fourth World Congress o­n Particle Technology, Sydney, 2002.
Copyright: 
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