Granular fluids with solid friction and heating

Prasenjit Das, Sanjay Puri*, Moshe Schwartz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We perform large-scale molecular dynamics simulations to study heated granular fluids in three dimensions. Granular particles dissipate their kinetic energy due to solid frictional interaction with other particles. The velocity of each particle is perturbed by a uniformly-distributed random noise, which mimics the heating. At the early stage of evolution, the kinetic energy of the system decays with time and reaches a steady state at a later stage. The velocity distribution in the steady state shows a non-Gaussian distribution. This has been characterized by using the Sonine polynomial expansion for a wide range of densities. Particles show diffusive motion for densities below the jamming densityϕJ.

Original languageEnglish
Article number15
JournalGranular Matter
Issue number1
StatePublished - 1 Feb 2018


  • Cooling
  • Friction
  • Granular gases


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