Slurry flow, a two-phase solid-liquid flow has long been a significant industrial challenge. Centrifugal pumps handling slurry flow are extensively used in different fields such as dredging industry, agriculture, petrochemicals, mining and sewage handling. The existence of the solid phase not only decreases the pump efficiency, head and increases the consumed power but also increases the pressure fluctuation which in turn increases vibration and noise, increases cavitation vulnerability and abrasion of the pump components. Although the experimental studies have better accuracy and reliability, it is limited due to the complicated nature of such type of flow and instead with the development of computational fluid dynamics (CFD) tools, the numerical simulation has been used widely to predict the performance parameters of pumps and precisely describe the flow field inside it. A lot of literature has been implemented to study the performance of centrifugal pumps while handling slurry flow; however, the improvement on the pump performance remains a concern. In the present study, "Splitter blades” are adopted with the same main blade profile to mitigate the conditions that are related to the slurry flow. To investigate the effect of splitter blades on the performance parameters and pressure fluctuation of the centrifugal pump handling solid-liquid two-phase flow, the three-dimensional, unsteady, incompressible, and turbulent solid-liquid two-phase flow simulation is conducted based on the particle transport solid model of the two-phase flow, the k-ε turbulence model with Sommerfeld collision model and particles size distribution follows Rosin Rammler equation. The H-Q curve is obtained, also the pressure fluctuation in some locations in the pump impeller and volute is calculated and sketched to compare between the pump with and without splitter blades. The result of the study indicates that using splitter blades has a positive effect on the performance of the pump through increasing the pump head, decreasing pressure fluctuation thus vibration and noise in addition to enhancing the pump against cavitation

Splitter Blade; Slurry Pump; CFD; Performance Enhancement