A study on the influence of the particle packing fraction on the performance of a multilevel contact detection algorithm

V. Ogarko, V. Ogarko, Stefan Luding

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Abstract

We investigate the influence of the packing fraction of highly polydisperse particle systems on the performance of a high-performance multilevel contact detection algorithm as applied for molecular dynamics type simulations. For best performance, this algorithm requires two or more hierarchy levels in order to cope with the strongly different particle size classes. In order to predict the optimal number of levels, an empirical parameter corresponding to the "overhead" is identified. For homogeneous systems, the density is not much affecting the performance of the algorithm, however, the optimal number of levels slightly increases with density as well as the speed-up as compared to a single-level method.
Original languageEnglish
Title of host publicationInternational conference on particle based methods
EditorsE Onate, D.R.J Owen
Place of PublicationBarcelona
PublisherCIMNE
Pages1-4
Number of pages7
ISBN (Print)978-84-89925-69-4
Publication statusPublished - 26 Oct 2011
Event2nd International Conference on Particle-based Methods, PARTICLES 2011 - Barcelona, Spain
Duration: 26 Oct 201128 Oct 2011
Conference number: 2
http://congress.cimne.com/particles2011/frontal/default.asp

Publication series

Name
PublisherEccomas

Conference

Conference2nd International Conference on Particle-based Methods, PARTICLES 2011
Abbreviated titlePARTICLES
CountrySpain
CityBarcelona
Period26/10/1128/10/11
Internet address

Keywords

  • Contact detection
  • IR-80383
  • METIS-284481
  • packing fractioncontact detection
  • packing fraction
  • Polydisperse
  • particle size distribution
  • discrete element

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