Energy nonequipartition in systems of inelastic, rough spheres

Sean McNamara, Stefan Luding

    Research output: Contribution to journalArticleAcademicpeer-review

    74 Citations (Scopus)

    Abstract

    We calculate and verify with simulations the ratio between the average translational and rotational energies of systems with rough, inelastic particles, either forced or freely cooling. The ratio shows a nonequipartition of energy. In stationary flows, this ratio depends mainly on the particle roughness, but in nonstationary flows, such as freely cooling granular media, it also depends strongly on the normal dissipation. The approach presented here unifies and simplifies different results obtained by more elaborate kinetic theories. We observe that the boundary induced energy flux plays an important role.

    Original languageEnglish
    Pages (from-to)2247-2250
    Number of pages4
    JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
    Volume58
    Issue number2
    DOIs
    Publication statusPublished - 1 Jan 1998

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