Improvement of partial load performance of francis turbine runner

Naoki Yamaguchi, Tadachika Tanaka, Kazuyoshi Miyagawa

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

    1 Citation (Scopus)

    Abstract

    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.

    Original languageEnglish
    Title of host publicationIET Conference Publications
    PublisherInstitution of Engineering and Technology
    Volume2014
    EditionCP658
    DOIs
    Publication statusPublished - 2014
    Event6th International Symposium on Fluid Machinery and Fluid Engineering, ISFMFE 2014 - Wuhan, China
    Duration: 2014 Oct 222014 Oct 25

    Other

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

    Keywords

    • CFD
    • Design method
    • Francis turbine
    • Model performance test
    • Partial load

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

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  • Cite this

    Yamaguchi, N., Tanaka, T., & Miyagawa, K. (2014). Improvement of partial load performance of francis turbine runner. In IET Conference Publications (CP658 ed., Vol. 2014). Institution of Engineering and Technology. https://doi.org/10.1049/cp.2014.1138