上向流中における二次元気泡噴流
1988 年 1988 巻 399 号 p. 27-36
詳細
1988 年 1988 巻 399 号 p. 27-36
A discharge of air bubbles into water in a aeration tank generates a turbulent air bubble plume in a spiral flow. This paper discribes the mechanics of the air-bubble plume in a upward flow instead of the spiral flow. We measured the mean velocities and the streamwise component of the turbulent fluctuations with a miniature propeller current meter. It is found that the interaction of air bubbles plays very important role in the region close to the line source. The results of the analyses by the use of moment transformations for equations of momentum and volume conservation of bubbles are compared with experimental data.
