Thermal convection in granular gases

A recent experiment, published in Phys. Rev. Lett. 117, 098006, 2016 shows thermal convection in a granular gas with small gravity. The convection pattern is induced by combination of vertical gravity and a horizontal thermal gradient due to energy dissipation … Read the rest

Quasi 2D granular dynamics

4000 spheres of steel (diameter 2mm) are deposited on a horizontal rough plate (200mm diameter, only a square 100mm X 100mm is shown) and are put in motion by vertical vibration of the plate (sinusoidal shaking, amplitude 0.7mm, frequency 200Hz). … Read the rest

Granular Phases

Steel spheres move on a plate. The “thermostat ” is a vibrating wall, following a sine law with frequency 20 Hz . Weak gravity (the plate has a small angle of inclination) draws the spheres toward the vibrating wall. In … Read the rest