| Abstract: | A method is described for the experimental study of the characteristics of the bubble phase in a developed fluidized bed in examples of disperse materials belonging to groups A and B in the well-known classification of Geldart 1], which distinguished four groups of fluidizable materials according to the densities and dimensions of the solid particles. The method developed makes it possible to determine the average and local characteristics of the phase of the bubbles in apparatus of arbitrary dimensions. Depending on whether the material belongs to group A or group B of the classification, the distributions are found of the bubbles in respect of their vertical dimensions and their velocities, as are also the relative numbers of occasions when agglomerates coalesce and form, and the relative times of contact between the inhomogeneities and a sensor in a flat fluidized bed.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 5, pp. 71–76, September–October, 1987. |
