Experimental Studies of Vibro-fluidised Granular Beds

A series of experiments has been performed on two-dimensionaland three-dimensional granular gases. The concept of granular temperature has been used to characterize the kinetic energy of the grains. Further tests of the analogy with gas kinetic theory have resulted in investigations into the collective behaviour of the grains, and the diflusion coefficient. Positron Emission Particle Tracking has been used to follow the motion of a single grain within an experimental cell, and preliminary measurements of the granular temperature of a dilute three-dimensional granular gas have been made for the first time.

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