Zero-gravity thermal convection in granular gases

Abstract

Previous experimental and theoretical evidence has shown that convective flow may appear in granular fluids if subjected to a thermal gradient and gravity (Rayleigh-Bénard-type convection). In contrast to this, we present here evidence of gravity-free thermal convection in a granular gas, with no presence of external thermal gradients either. Convection is here maintained steady by internal gradients due to dissipation and thermal sources at the same temperature. The granular gas is composed by identical disks and is enclosed in a rectangular region. Our results are obtained by means of an event-driven algorithm for inelastic hard disks.

arXiv comment5 pages, 5 figures. Supplementary material only in published in journal version

References in corpus (14)

• Patterns and Collective Behavior in Granular Media: Theoretical Concepts
• Scaling behavior in the $\beta$-relaxation regime of a supercooled Lennard-Jones mixture
• Clustering, Order, and Collapse in a Driven Granular Monolayer
• Phase Diagram of Vertically Shaken Granular Matter
• Thermal convection in fluidized granular systems
• Experimental investigation of the freely cooling granular gas
• Onset of thermal convection in a horizontal layer of granular gas
• Wall-Enhanced Convection in Vibrofluidized Granular Systems
• Thermal convection in granular gases with dissipative lateral walls
• Steady base states for Navier-Stokes granular hydrodynamics with boundary heating and shear
• On the emergence of large and complex memory effects in nonequilibrium fluids
• Impact of jamming criticality on low-temperature anomalies in structural glasses
• ARISE: A granular matter experiment on the International Space Station
• Melting a granular glass by cooling

Cited by in corpus (1)

• Chirality transitions in a system of active flat spinners