Onset of convection in molecular dynamics simulations of grains

S. Luding*, E. Clément, A. Blumen, J. Rajchenbach, J. Duran

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

82 Citations (Scopus)
20 Downloads (Pure)


We investigate granular materials undergoing vibrations, using a molecular dynamics (MD) algorithm, and we display limitations of the numerical method. We show that previously reported convection patterns obtained through MD may be due to the microscopic interactions. MD calculations often use parameters which lead to unphysically large contact times between beads and to large density fluctuations. These in turn enhance the appearance of convection rolls, a numerical finding without experimental counterpart.

Original languageEnglish
JournalPhysical Review E
Issue number3
Publication statusPublished - 1 Jan 1994
Externally publishedYes


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