Abstract
It is an important problem to understand the amount of heat and mass transfer phenomenon between two kinds of fluids in multi-phase flows. The inner flow of the bubble is driven by the outer flow trough the interface, when a bubble rises in a continuous phase such as water. The interfacial property shows the solid wall by the influence of a strong contamination. However, there is no experimental data such as the quantitative relation between the interface flow and contaminated interface of the bubble. This study aims to measure the velocity of interface flow by using image measurement technique. In this paper, the interface velocity could be estimated. As a result, interface flow of a spherical bubble corresponded to the theoretical solution by Hadamard. Therefore, inner flow of a bubble must be the theoretical flow pattern.
