A Theoretical Model for Bubble Formation at a Frit Surface in a Shear Field

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Abstract
Engineers, meteorologists, and oceanographers all have an interest in the behavior of small air bubbles in water. Studies that are concerned with the separation of dissolved and particulate species, aerosol formation, and oceanic particle production require a means for the generation of large numbers of small bubbles. A device that produces populations of small bubbles (between 15 and 100 μm in radius) with predictable size distributions has been developed and is described. A model based upon an analysis of the form drag on a bubble emerging from a submerged orifice in a shear field successfully predicts the number-size distribution of bubbles produced by the bubble generator.