Theoretical and Experimental Study of Gas Bubbles Behavior

Abstract

The paper presents theoretical considerations on gas bubbles behavior -analytic calculation of bubble time formation, extra pressure needed for the bubble formation and detachment, bubble size and correlation between the extra pressure and the liquid superficial tension. In order to evaluate the theoretical relation for extra pressure calculation, the results of the tests performed on different metallic perforated plates 60, with a specific number of orifices of different diameters, were used. The extra pressure needed for bubble formation varies from approximately 171 Pa for the MPP with 0.9 mm orifices to 245 Pa for the MPP with 0.2 mm orifices.