Author(s): F N Chen; H M Lei; S H Ahn; H G Fan; X P Jiang; J W Hu; J Zhang; Y Y Luo; Z W Wang

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Keywords: NULL

Abstract: The opening degrees of guide vane and runner blade are adjustable for Kaplan units. Therefore, the prototype unit performance is evaluated by cam curves to ensure the maximum efficiency points at different runner blade or guide vane angles. In this paper, the numerical simulation method is used to obtain the cohesive curves. The gravity force term is not ignored in the calculation, of which the effects are analysed not only on prototype performances, but also on internal flow characteristics such as the streamlines around runner blades, the pressure distributions and the head losses of each part.

DOI: https://doi.org/10.1088/1755-1315/163/1/012070

Year: 2017