Modelling design and blade profile optimization for a mixed-flow pump impeller

Pumps are a type of energy conversion equipments. They can change the mechanical energy into the potential energy of the working fluid. The good design of hydraulic model determines the good hydraulic performances of pumps. We herein studied on modelling design and blade profile optimization of a mixed-flow pump impeller to meet hydraulic design requirements. Our goals were to satisfy the requirements of water dynamics strength and hydraulic performance. In order to meet the number of rotor and static blade matching up principle and to improve the safety of the operation, we selected the appropriate number of impeller blades and redesigned a mixed-flow pump impeller based on modelling design method. And we utilized a genetic algorithm to optimize the blade, which tried to modify the inlet and outlet angle and blade profile to achieve good hydraulic performance. The numerical simulations showed that the optimal impeller performed well in the hydraulic, cavitations, water dynamics strength, and meet the design requirements of main pump. © Sila Science.