Abstract
We report experimental results on the behavior of an ensemble of inelastically colliding particles, excited by a vibrated piston in a vertical cylinder. When the particle number is increased, we observe a transition from a regime where the particles have erratic motions (granular “gas”) to a collective behavior where all the particles bounce like a nearly solid body. In the gaslike regime, we measure the pressure at constant volume, and the bed expansion at constant external pressure, as a function of the number N of particles. We also measure the density of particles as a function of the altitude, and find that the “atmosphere” is exponentialfar enough from the piston. From these three independent measurements, we determine a “state equation” between pressure, volume, particle number and the vibration amplitude and frequency.
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Falcon, É., Fauve, S., Laroche, C. (2001). Experimental Study of a Granular Gas Fluidized by Vibrations. In: Pöschel, T., Luding, S. (eds) Granular Gases. Lecture Notes in Physics, vol 564. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44506-4_14
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DOI: https://doi.org/10.1007/3-540-44506-4_14
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