Study of flow instability in off design operation of a multistage centrifugal pump

Akiha Shibata, Hideto Hiramatsu, Shutaro Komaki, Kazuyoshi Miyagawa*, Manabu Maeda, Shun Kamei, Ryota Hazama, Takeshi Sano, Masamichi Iino

*この研究の対応する著者

    研究成果: Article査読

    19 被引用数 (Scopus)

    抄録

    In recent years, attempts have been made to make multistage centrifugal pumps smaller in size and more efficient. However, such designs are known to cause positive-slope phenomena in the Q-H curve, especially under low-flow conditions. These phenomena, which have thus far been studied experimentally and numerically, stem from flow instability in the pump. However, their mechanisms have not yet been clarified because it depends on various parameters. In this study, we focused on diffuser rotating stall, observed in positive Q-H characteristics. This study elucidates the mechanism of positive-slope generation through experimental results and two-dimensional numerical analysis.

    本文言語English
    ページ(範囲)493-498
    ページ数6
    ジャーナルJournal of Mechanical Science and Technology
    30
    2
    DOI
    出版ステータスPublished - 2016 2 1

    ASJC Scopus subject areas

    • 機械工学
    • 材料力学

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