Effect of Inlet Angle and Outlet Angle on the Performance of Double-Piston Synchronous Pumps

The paper presents a CFD investigation of the effect of inlet angle and outlet angle on the flow performance of the newly introduced double-piston synchronous pump. The effect of these angles on the pressure difference developed between the leading and trailing faces of the moving piston are expressed in terms of dimensionless shape factors. CFD simulations show that a smaller inlet angle contributes significantly to reducing the swirling, separation and vorticity losses at the sudden expansion region at the inlet, and thus has a significant effect on the entry shape factor. The effect of the outlet angle on the exit shape factor is less pronounced.