Buoyancy driven convection and hysteresis in granular gases: numerical solution

Patricio Cordero, Rosa Ramı́rez and Dino Risso

Physica A: Statistical Mechanics and its Applications, 2003, vol. 327, issue 1, 82-87

Abstract: Granular gas-dynamic equations are written down and numerically integrated to study convection. For a two-dimensional gas of inelastic hard disks in a square box and under the effect of gravity, the equations predict buoyancy driven convection triggered by the dynamically created “temperature”-gradient, in coincidence with what has been seen in molecular dynamics simulations and in real 3D experiments. Three states are observed: conductive, one-convective roll and two-convective rolls states. The numerical solution predicts a hysteresis cycle between the last two states.

Keywords: Granular matter; Fluids; Convection (search for similar items in EconPapers)
Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:327:y:2003:i:1:p:82-87

DOI: 10.1016/S0378-4371(03)00455-2

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