ON THE PARTICLE VELOCITIES IN SOLID-LIQUID TWO-PHASE FLOW THROUGH STRAIGHT PIPES AND BENDS
1973 Volume 6 Issue 2 Pages 140-146
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1973 Volume 6 Issue 2 Pages 140-146
The mean particle velocities in horizontal pipe, vertical pipe and pipe bends made of transparent polyacrylate pipe 30.2 mm in inside diameter were investigated experimentally. The radii of curvature of the bends were 12, 24 and 48 cm, The solid particles used were glass beads which had a mean particle diameter of 0.189 cm and a density of 2.5 g/cm3. Radioactive particles were introduced as tracer and the particle velocities were determined by scintillation probes.
The particle velocities in both the straight pipes and the bends are distributed in wide ranges, because the flow path of each particle in pipe is different. The particle velocity in vertical pipe is greater than that in horizontal pipe. The particle velocities in vertical bends with horizontal approach flow are in general smaller than those in the other bends. The effect of the radius of curvature on the particle velocity comes to be larger when the mean flow rate of slurry increases.
