Turbomachinery
Online ISSN : 1880-2338
Print ISSN : 0385-8839
ISSN-L : 0385-8839
Volume 39, Issue 5
Displaying 1-1 of 1 articles from this issue
Technical papers
  • ShyangMaw LIM, Sadao KUROSAWA, Toshiaki SUZUKI
    Article type: Original Article
    2011 Volume 39 Issue 5 Pages 313-319
    Published: 2011
    Released on J-STAGE: May 31, 2013
    JOURNAL FREE ACCESS
    At present, research and development of hydraulic turbines involves two stages: design optimization by numerical flow simulation and verifications of optimized turbine performance by model test. Since model test forms a large portion of the total development cost, significant cost reduction could be achieved if conventional performance verifications by model test are replaced by numerical simulation which can predict main performances of hydraulic turbine such as efficiency, pressure fluctuation and cavitations with high accuracy, namely numerical model test. This paper presents numerical simulation methods that can predict main performances of Francis turbine with high accuracy. Comparisons of simulation results with model test results show that numerical model test could predict main performances of turbine with high accuracy. Therefore, it can be concluded that numerical model test has potential to replace conventional model test for verification works and hence contributes to cost reduction in the development of Francis turbine.
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