Dynamic Behaviors of Supersonic Granular Media under Vertical Vibration

Details Dynamic Behaviors of Supersonic Granular Media under Vertical Vibration Dynamic Behaviors of Supersonic Granular Media under Vertical Vibration

2005-11-29

arxiv.org/abs/cond-mat/0511689v1

Physics

Condensed Matter

Soft Condensed Matter

7pages, 3figures, submitted to Proceedings of WCU/UI2005 (Beijing, China)

Scientific paper

We present experimental study of vibrofluidized granular materials by high speed photography. Statistical results present the averaged dynamic behaviors of granular materials in one cycle, including the variations of height, velocity and mechanical energy of the center of mass. Furthermore, time-space distribution of granular temperature which corresponds to the random kinetic energy shows that a temperature peak forms in the compression period and propagates upward with a steepened front. The Mach number in the steepened front is found to be greater than unity, indicating a shock propagating in the supersonic granular media.

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