Pressure Loss in the Pipe Bends, in which Granular Solids are Transported

Abstract

The authors have examined experimentally the pressure loss in the pipe bends, in which granular solids are transported. In order to investigate the pressure losses an assumption has been made that the total pressure loss consists of the losees in the flow of ordinary fluids through a pipe bend and those due to solids. It has been shown that the former is presented by the known formula and the authors have obtained the tact that the pressure losses due to solids increases in proportion to the weight ratio of solids to air in flow. Moreover the flow of solids in glass pipe bends has been observed. The observation has helped us in taking account of the effect of solids flow upon the pressure losses due to solids.