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Comparative study of sediment erosion on alternative designs of Francis runner blade
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 Title & Authors
Comparative study of sediment erosion on alternative designs of Francis runner blade
Rajkarnikar, Bidhan; Neopane, Hari P.; Thapa, Biraj S.;
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 Abstract
The aim of this study was comparative analysis of sediment-induced erosion on optimized design and traditional design of Francis runner blade. The analysis was conducted through laboratory experiments in a test rig called Rotating Disc Apparatus. The results showed that the extent of erosion was significantly less in the optimized design when compared based on the material loss. It was observed that the optimized design could reduce sediment erosion by about 14.4% if it was used in place of the reference design for entire duration of the experiment. Based on the observations and results obtained, it has been concluded that the optimization of hydraulic design of blade profile of Francis runner can significantly reduce the effect of sediment-induced erosion.
 Keywords
Francis turbine;optimized design;rotating disc apparatus;runner blade;sediment erosion;wear pattern;
 Language
English
 Cited by
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