BUBBLE INTERACTION IN FLUIDIZED BEDS

In order to analyze the motion of interacting bubbles in a fluidized bed, it is postulated that the velocity of a bubble may be approximated by adding to its rise velocity in isolation the velocity which the continuous phase would have at the position of the nose if the bubble were absent. This principle is applied to the coalescence of two bubbles on a common vertical line and found to agree quantitatively with experimental measurements obtained both by the authors and by other workers