1989 Volume 3 Issue 4 Pages 379-388
In order to elucidate hydrodynamic characteristics of gas slugs in gas-liquid-solid three-phase upward flows the measurements of film thickness around slugs, rise velocity and lengths of gas and liquid slugs were conducted. For the measurements of these values a new optical fiber probe, which could be used even in the high solid concentration, was developed. It was found that both the film thickness and rise velocity of slugs were almost constant, independently of particle size and solid concentration. On the other hand, the length of gas slugs had a maximum value at a certain solid concentration, but that of liquid slugs monotonously became longer with an increase in the solid concentration.
