Three Dimensional Solid-liquid Flow Analysis For Design of Two-stage Lifting Pump

Numerical analyses on the solid-liquid flow have been performed to design a lifting pump, which consists of two stages of impellers in series. Eulerian multi-phase model was applied using a CFD model. From the analyses, it was observed that backward flow occurred at the second stage of the lifting pump. No serious accumulation or plugging phenomena of solid particles did not occur in the first stage, but some accumulation area showed up at the second stage. It is suggested to reduce the numbers of the blade for the prevention of partial accumulation that can happen in the second stage impeller.