Influences of impeller diameter and diffuser blades on air-water two-phase flow performance of centrifugal pump

Naoki Matsushita, Akinori Furukawa, Kusuo Okuma, Satoshi Watanabe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A tandem arrangement of double rotating cascades and single diffuser cascade, proposed as a centrifugal pump with high performance in air-water two-phase flow condition, yields lower head due to the smallness of the impeller outlet in comparison with a impeller with large outlet diameter and no diffuser. Influences of impeller diameter change and installation of diffuser blades on two-phase flow performance were experimentally investigated under the case of the same volute casing. As the result, the similarity law of the diameter of impeller having the similar blade geometry and the rotational speed is satisfied even in two-phase flow condition. Comparing pump performances between a large impeller without diffuser blades and a small one with diffuser blades, higher two-phase flow performance is obtained by controlling the rotational speed of a small impeller with diffuser blades in the range of small water flow rates, while a large impeller with no diffuser gives high performance in the range of high water flow rate and small air flow rate.

Original languageEnglish
Title of host publicationProceedings of ASME Fluids Engineering Division Summer Conference, 2005 Forums, FEDSM2005
Pages59-64
Number of pages6
Publication statusPublished - Dec 19 2005
Event2005 ASME Fluids Engineering Division Summer Conference - Houston, TX, United States
Duration: Jun 19 2005Jun 23 2005

Publication series

NameProceedings of the American Society of Mechanical Engineers Fluids Engineering Division Summer Conference
Volume2

Other

Other2005 ASME Fluids Engineering Division Summer Conference
CountryUnited States
CityHouston, TX
Period6/19/056/23/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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