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

    Research output: Contribution to journalArticle

    14 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)493-498
    Number of pages6
    JournalJournal of Mechanical Science and Technology
    Volume30
    Issue number2
    DOIs
    Publication statusPublished - 2016 Feb 1

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    Centrifugal pumps
    Numerical analysis
    Pumps

    Keywords

    • Centrifugal pump
    • Flow instability
    • Off design operation
    • Rotating stall

    ASJC Scopus subject areas

    • Mechanical Engineering
    • Mechanics of Materials

    Cite this

    Study of flow instability in off design operation of a multistage centrifugal pump. / Shibata, Akiha; Hiramatsu, Hideto; Komaki, Shutaro; Miyagawa, Kazuyoshi; Maeda, Manabu; Kamei, Shun; Hazama, Ryota; Sano, Takeshi; Iino, Masamichi.

    In: Journal of Mechanical Science and Technology, Vol. 30, No. 2, 01.02.2016, p. 493-498.

    Research output: Contribution to journalArticle

    Shibata, A, Hiramatsu, H, Komaki, S, Miyagawa, K, Maeda, M, Kamei, S, Hazama, R, Sano, T & Iino, M 2016, 'Study of flow instability in off design operation of a multistage centrifugal pump', Journal of Mechanical Science and Technology, vol. 30, no. 2, pp. 493-498. https://doi.org/10.1007/s12206-016-0101-1
    Shibata, Akiha ; Hiramatsu, Hideto ; Komaki, Shutaro ; Miyagawa, Kazuyoshi ; Maeda, Manabu ; Kamei, Shun ; Hazama, Ryota ; Sano, Takeshi ; Iino, Masamichi. / Study of flow instability in off design operation of a multistage centrifugal pump. In: Journal of Mechanical Science and Technology. 2016 ; Vol. 30, No. 2. pp. 493-498.
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    AU - Komaki, Shutaro

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    AU - Maeda, Manabu

    AU - Kamei, Shun

    AU - Hazama, Ryota

    AU - Sano, Takeshi

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