In this paper the modern electron-optical equipment is used to translate the clear image of fast-moving bubbles in the bubbling liquid on a sieve tray into the digital information stored in the computer

and the computer-aided image-analysis technique is utilized to measure the bubble size distributions and interfacial areas under various operating conditions.The dynamic behavior of bubbles in the turbulent liquid is analyzed theoretically

the mechanism of bubble deformation and breakage is explored on the basis of Kolmogoroff’s isotropic turbulence hypothesis

and the mathematical model for predicting gas-liquid interfacial area is proposed.The comparison between the simulated results and the experimental data shows that the model is accurate

simple and convenient for use.