Development of a Sand Collector Having a Small Jet Source at the Collecting Mouth : Effects of the Flow Rate on the Concentration of Glass Beads

Abstract

A proposed sand collector having a small injection at the collecting port can be applied not only for gases but also for liquids as a carrier and can transport many kinds of grains, sands and other relatively small particles. Several variables affect the performance of this device. In this paper, the effects of the ratio of the flow rate of injection to the flow rate of suction on the concentration of glass beads are discussed experimentally using the glass beads and liquid two-phase flow. As a result, it is clarified that there exists a most provable ratio of the flow rate giving the maximum concentration of glass beads