Investigating the eruptions of fine−grain material from a nonuniform fluidized bed

Abstract A model is proposed for the entrainment of particles from the surface of a fluidized bed. It is shown that the deep voids produced by coalescence of tw The gas flux across the elongated ellipsoidal voids at the bed surface was investigated when the superficial gas velocity was equal to w mf and The analytical solution for the gas flow through the ellipsoidal void when the Reynolds number is small was derived and an empirical correlation is giv An empirical correlation for prediction of the maximum entrainment height was obtained. This includes a dependence on diameter and height of the bed, f