MEASUREMENT OF AIR BUBBLE-SIZE USING DENSITOMETER

A simple mass-transfer model is derived which gives the initial air bu bble size distributions in a dispersion of air bubbles in water from t he density/time responses to a step increase of pressure. Bubble size distributions from the model showed reasonable agreement with direct o ptical measurements. This work is applicable to dilute dispersions of bubbles which experience a sufficiently large increase in pressure suc h that the resulting solution is unsaturated with air.