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International Journal of Rotating Machinery
Volume 10, Issue 2, Pages 115-119

Optimization of Meridional Flow Channel Design of Pump Impeller

1KUBOTA Corporation, Pumps R&D Department, 1-1-1 Hama, Amagasaki-City 661-8567, Japan
2Department of Mech. Engineering, The University of Tokushima, 2-1 Minami-Josanjima, Tokushima-City 770-8506, Japan

Copyright © 2004 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The meridional flow channel design of a pump impeller affects its performance. However, since so many design parameters exist, a new design method is proposed in which a meridional and blade-to-blade flow channel is designed by the parallel use of the circulation distribution provided by the designer. Thus, an optimization method was used to design an axis-symmetrical meridional flow channel from the circulation distribution. In addition, the inverse design method proposed by Zangeneh et al. (1996) was employed to design a three-dimensional blade-to-blade flow channel from the circulation distribution and the optimized meridional shape. In this article, a few design examples and these Computational Fluid Dynamics (CFD) validations are also given.