Abstract
Equations of motion of solid particles in a pump impeller having a low specific speed were solved numerically in the flow field obtained with assumptions of an inviscid and incompressible three-dimensional potential flow, and general movements of solid particles in the pump were clarified. Trajectories of the sand particles and manganese ores, with diameters ranging from 1 to 5 mm, were obtained for different flow capacities. The positions and velocities with which the particles impact on the boundary surface of the pump were also discussed in order to estimate erosion damage in pumps.
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