Study on cavitation influence for pump head in an axial flow pump

K. Hosono, Y. Kajie, S. Saito, Kazuyoshi Miyagawa

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    Abstract

    The size of axial flow pumps used in drainage pump stations has recently decreased, and their rotation speeds have increased, causing an increase in the risk of cavitation. Therefore, to provide highly reliable pumps, it is important to understand the internal flow of pumps under cavitating conditions. In this study, high-speed camera measurements and computational fluid dynamics analysis were performed to understand the cavitation performance of an axial flow pump. The mechanism that causes the head to change as a result of cavitation under low net positive suction head values is shown to be the balance between the increasing angular momentum and the loss indicated by the changing streamlines.

    Original languageEnglish
    Article number012062
    JournalJournal of Physics: Conference Series
    Volume656
    Issue number1
    DOIs
    Publication statusPublished - 2015 Dec 3

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    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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