Computer simulations of magnetic grains

S. Fazekas, J. Kertész, D. E. Wolf

Research output: Contribution to Book/Report typesConference contributionpeer-review

Abstract (may include machine translation)

In dense arrangements of magnetic grains, cutting off the interaction potential gives a possibility to accelerate simulation algorithms.We argue that R ≈ 5 particle diameters is a reasonable choice for dipole-dipole interaction cutoff in two-dimensional dipolar hard sphere systems, if one is interested in local ordering. As an application, we performed computer simulations based on a two-dimensional Distinct Element Method to study granular systems of magnetized spherical particles. The effect of the magnetization on the angle of repose, on the surface roughness of piles, and on particle avalanches were studied. We found a smooth transition in the avalanche formation from a granular regime to a correlated regime controlled by the magnetic interparticle force. This observation underlines the analogies between systems with magnetic and adhesive forces.

Original languageEnglish
Title of host publicationTraffic and Granular Flow 2003
PublisherSpringer Berlin Heidelberg
Pages489-501
Number of pages13
ISBN (Print)3540258140, 9783540258148
DOIs
StatePublished - 2005
Externally publishedYes
Event5th International Workshop on Traffic and Granular Flow, TGF 2003 - Delft, Netherlands
Duration: 1 Oct 20033 Oct 2003

Publication series

NameTraffic and Granular Flow 2003

Conference

Conference5th International Workshop on Traffic and Granular Flow, TGF 2003
Country/TerritoryNetherlands
CityDelft
Period1/10/033/10/03

Keywords

  • Avalanches
  • Granular piles
  • Magnetic grains

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