Discontinuity in Particle Granular Temperature Across the Geldart B/A Boundary

摘要

We present new values for the granular temperature or average particle kinetic energy of the dense phase of a fluidized bed consisting of monodispersed glass spheres, as a function of sphere diameter and gas flow. The non-intrusive experimental technique to measure the granular temperature, acoustic shot noise excitation of the wall of the bed by random particle impact, is first briefly described. The bulk modulus and other key parameters of the two phase fluid dynamics of the fluidized state, are then derived from the gramular temperature, through a dense gas kinetic model.