Abstract
Gas-liquid annular two-phase flow is an important flow pattern from the view point of the liquid film dryout at the high quality region in various kinds of Steam generators. In the past, many investigations on an annular-dispersed flow in horizontal pipelines were conducted, and the behaviors of droplets have been discussed. They, however, focussed only on spatially averaged values of various properties of the entrained droplets. On the other hand, it was reported that the generation of droplets from the top of disturbance waves is remarkable by the observation by a high speed camera. In the present paper, experimental data on the distribution of entrained droplets and their deposition on the wall are presented. In this experiment, the isokinetic sampling probe technique was used for the measurement of the entrained droplet flow rate generated from an imitative disturbance wave constructed by injecting liquid through a slit mounted on the bottom of duct.
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