INTERFACIAL AREA DENSITY, MEAN RADIUS AND NUMBER DENSITY-MEASUREMENTS IN BUBBLY 2-PHASE FLOW

This paper presents a new experimental method for measuring the local interfacial area density, average bubble radius and number density for bubbly two-phase flow. Experiments were performed using a KfK dual-sensor resistivity probe. The results obtained for interfacial area density using this method agreed with other methods previously proposed, except for high void fractions, close to the transition to slug flow, where prior methods are known to no longer be valid.