Abstract
The present paper gives a brief review based on the author's studies mainly on the problems of the fluid dynamics and dispersion around a single gas bubble. This review is divided into three parts : the first relates to the investigation on the dispersion phenomena of gas molecules dispersing into the liquid using a color reaction method ; the second relates to the measurement of the velocity distributions around a gas bubble by the tracer method, and examination on the appropriateness of conventional models by comparing with the actual empirical evidence ; the third relates to the measurement of streamlines, vorticity and stress distributions around a gas bubble by the tracer method as well as discussion on the mechanism about the generation of vortex and separation of streamline.
