The role of rotational inertia in the dynamics of vibrofluidised granular gases

C. R.K. Windows-Yule*, B. Maddox, D. J. Parker

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

6 Citations (Scopus)


The effect of particle shape on the properties of granular systems is a matter of great relevance to many diverse fields, yet remains incompletely understood. While the geometry of a particle determines a number of its physical properties, in this study, we isolate the influence of the moment of inertia possessed by a particle on its dynamical behaviour. Through the application of positron emission particle tracking, we experimentally investigate vibrofluidised granulates comprising particles of varying rotational inertia. We demonstrate that beds composed of particles with greater rotational inertia consistently obtain higher translational kinetic energies than those comprising particles with lower angular mass. This observation is shown to be robust over a range of system parameters, and a mechanism explaining the newly observed behaviour is proposed.

Original languageEnglish
Article number58006
Number of pages7
Issue number5
Publication statusPublished - 5 Dec 2014

ASJC Scopus subject areas

  • General Physics and Astronomy


Dive into the research topics of 'The role of rotational inertia in the dynamics of vibrofluidised granular gases'. Together they form a unique fingerprint.

Cite this