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Design study of a regenerative pump using one-dimensional and three-dimensional numerical techniques

Quail, Francis J. and Scanlon, T.J. and Baumgartner, A. (2012) Design study of a regenerative pump using one-dimensional and three-dimensional numerical techniques. European Journal of Mechanics - B/Fluids, 31. pp. 181-187. ISSN 0997-7546

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Abstract

Regenerative pumps are low cost, compact, able to deliver high heads at low flow rates. Furthermore with stable performance characteristics they can operate with very small NPSH. The complexity of the flow field is a serious challenge for any kind of mathematical modelling. This paper compares an analytical and numerical technique of resolving the performance for a new regenerative pump design. The performance characteristics computed by a CFD approach and a new one-dimensional model are compared and matched to experimental test results. The approaches of both modelling techniques are assessed as potential design tools. The approaches are shown to not only successfully resolve the complex flow field within the pump; the CFD is also capable of resolving local flow properties to conduct further refinements. The flow field is represented by the CFD as it has never been before. A new design process is suggested. The new regenerative pump design is considered with a comparable duty centrifugal pump, proving that for many high head low flow rate applications the regenerative pump is a better choice.