Universal features of collective interactions in hard-sphere systems at higher volume fractions

M. Tokuyama, Y. Terada, H. Yamazaki, I. Oppenheim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In order to investigate the universal features of collective behavior due to the many-body interactions, we perform two types of computer simulations on hard-sphere systems, a Brownian-dynamics simulation on polydisperse suspensions of hard spheres, where the hydrodymamic interactions between particles are neglected, and a molecular-dynamics simulation on atomic systems of hard spheres. Thus, we show that the long-time self-diffusion coefficient in atomic systems has the same form as that derived theoretically by Tokuyama and Oppenheim (TO) for the monodisperse suspension by taking into account the many-body hydrodynamic interactions, except that the singular point is now replaced by a new one. We also show that the difference between two coefficients in both systems can be well explained by the short-time self-diffusion coefficient derived theoretically for a wide range of volume fractions.

Original languageEnglish
Title of host publicationSlow Dynamics in Complex Systems
Subtitle of host publication3rd International Symposium on Slow Dynamics in Complex Systems
EditorsMichio Tokuyama, Irwin Oppenheim
PublisherAmerican Institute of Physics Inc.
Pages8-15
Number of pages8
ISBN (Electronic)0735401837
DOIs
Publication statusPublished - 2004 Apr 30
Event3rd International Symposium on Slow Dynamics in Complex Systems - Sendai, Japan
Duration: 2003 Nov 32003 Nov 8

Publication series

NameAIP Conference Proceedings
Volume708
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other3rd International Symposium on Slow Dynamics in Complex Systems
CountryJapan
CitySendai
Period03/11/303/11/8

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Tokuyama, M., Terada, Y., Yamazaki, H., & Oppenheim, I. (2004). Universal features of collective interactions in hard-sphere systems at higher volume fractions. In M. Tokuyama, & I. Oppenheim (Eds.), Slow Dynamics in Complex Systems: 3rd International Symposium on Slow Dynamics in Complex Systems (pp. 8-15). (AIP Conference Proceedings; Vol. 708). American Institute of Physics Inc.. https://doi.org/10.1063/1.1764053