Improvement of partial load performance of francis turbine runner

Naoki Yamaguchi*, Tadachika Tanaka, Kazuyoshi Miyagawa

*この研究の対応する著者

    研究成果: Conference contribution

    1 被引用数 (Scopus)

    抄録

    Turbine operation range has had to be extended to meet economic requirements in recent years. Specifically, efficiency under partial flow conditions has been improved by the development of low loss runners. The most effective runner design achieves suitable flow distribution from the runner exit, because the loss mechanism in the partial flow is due to swirl loss in the draft tube. In this study, a new design concept for improving turbine efficiency under low flow rate conditions is established and confirmed by both computation and experiment. The performance predicted by the CFD is compared with the experimental results and good agreement is observed. This report describes some runner shape improvement techniques to mitigate the effects of the flow conditions in a partial flow scenario, and validates their results through model performance testing.

    本文言語English
    ホスト出版物のタイトルIET Conference Publications
    出版社Institution of Engineering and Technology
    2014
    CP658
    DOI
    出版ステータスPublished - 2014
    イベント6th International Symposium on Fluid Machinery and Fluid Engineering, ISFMFE 2014 - Wuhan, China
    継続期間: 2014 10 222014 10 25

    Other

    Other6th International Symposium on Fluid Machinery and Fluid Engineering, ISFMFE 2014
    国/地域China
    CityWuhan
    Period14/10/2214/10/25

    ASJC Scopus subject areas

    • 電子工学および電気工学

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