Pump Design System Based on Inverse Design Method and Its Application to Development of Diffuser Pump Series

3rd AMSE/JSME Joint Fluids Engineering Conference July 18-23, San Francisco, California FEDSM99-6845
1999

A new design system for the hydraulic and aerodynamic design of turbomachines has been established by adopting a three-dimensional inverse design method and Computational Fluid Dynamics (CFD).  The system enables the optimized design of Turbomachines in quite a short period by specifying the optimum blade loading distribution of impellers and diffusers.
The system was applied to the development of mixed-flow pumps over a wide range of specific speeds.  The design system was used to examine the effects of various design parameters, including blade loading distribution and meridional shapes, on three-dimensional flow fields and overall performance.  It was found that the blade loading distribution was most influential in achieving high efficiency and/or high suction performance.  Two different types of mixed-flow pump series, one with extremely compact machine size and the other with high performance, were developed by this design system and validated experimentally.