Centrifugal Pump Impeller Redesign to Improve Its Efficiency

Nowadays, the centrifugal pumps are one of the essential components of various industries. So improving their efficiency is so important. In this paper, the effective parameters in flow losses and increasing the efficiency of a centrifugal pump impeller have been investigated by numerical solution of three-dimensional turbulent flow of water fluid in a steady-state, incompressible and noslip condition on the walls and the surfaces of the vanes using ANSYS 16.0 software. Optimizing these parameters has led to increasing the pump efficiency. For this purpose, the parameters such as the number of the impeller vanes, inlet and outlet angles and leading and trailing edge thicknesses, have been studied. To validate the numerical solution, the provided results are compared with the pump characteristic curves of Manufacturer Company. With the change in the pump impeller design, the efficiency of the pump has been increased to 48 percent.