NDLI: Improvement of Suction Performance Using Splitter Impeller and Inducer

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Hayashi, K. Konno, S. Hayakawa, M. Kawata, Y.
Copyright Year	2017
Abstract	Suction performance is one of the most important characteristics of the industrial pump to keep the pump capability against the cavitation under the low suction pressure condition. Inducers have been developed to improve the suction performance of pumps. They are used for rocket turbo pumps and recently for many industrial applications. It is one of the competitiveness of the industrial pumps to downsize the scale with higher rotational speed by adopting inducer. The authors had proved that pump with splitter impeller with inducer can further improve the suction performance. The splitter impeller was specially designed to be resistant to the cavitation choke. The other very important requirement for the pump against cavitation is that it does not occur cavitation surge. The cavitation surge arises at the partial flow rate of the pump. In contrast to this the suction performance become better at the partial flow rate. So the precise compromise is necessary to satisfy these requirements. This paper presents the experimental and CFD results to improve and optimize the suction performance without generating cavitation surge. The many design and combination of splitter impeller and inducer are tested to get the better performance. The test results of pumps with different inlet flow coefficient are compared not only suction performance but also the onset of cavitation surge.
Sponsorship	Fluids Engineering Division
File Format	PDF
ISBN	9780791858042
DOI	10.1115/FEDSM2017-69256
Volume Number	Volume 1A, Symposia: Keynotes; Advances in Numerical Modeling for Turbomachinery Flow Optimization; Fluid Machinery; Industrial and Environmental Applications of Fluid Mechanics; Pumping Machinery
Conference Proceedings	ASME 2017 Fluids Engineering Division Summer Meeting
Language	English
Publisher Date	2017-07-30
Publisher Place	Waikoloa, Hawaii, USA
Access Restriction	Subscribed
Subject Keyword	Suction Design Rockets Computational fluid dynamics Pumps Impellers Turbochargers Cavitation Surges Flow (dynamics) Pressure
Content Type	Text
Resource Type	Article

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