抄録
Gas-liquid-solid three-phase flow in a vertical pipe is observed.Air, tap water and aluminum-ceramic balls of mean diameters 4.16-24.8mm were flowed in two vertical pipes with similar size of 30.3 and 30.8mm inside diameters and about 7.5m in height. Their flows were recorded by a 8mm CCD video camera.At first, in this paper, we introduce the observation of liquid-solid and gas-liquid two-phase flow which are considered as basic multiphase flows of gas-liquid-solid three-phase flow.Flow characteristics of dispersed flows such as existence of the light and shade of dispersed phase and their random movements were described fromthree dimensional view points.
