1993 Volume 36 Issue 4 Pages 524-531
As a first step to finding thin, low-drag foils in cascades applicable to Kaplan turbines of high specific speed, we systematically investigate the subcavitation performance and the cavitation aspects, especially those of the leading-edge separation bubble related to the drag, for two foils whose shapes are very similar, except for two percent of the total area near the leading edge contained by a chord, with somewhat modified edges, for various cavitation numbers and incidences. A marked change in drag results from a very small modification in the edge, and it is closely related to the stochastical appearance of the leading-edge separation bubble visualized through the attached cavitation.
JSME international journal. Ser. 1, Solid mechanics, strength of materials
JSME international journal. Ser. A, Mechanics and material engineering
JSME international journal. Ser. 3, Vibration, control engineering, engineering for industry
JSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing
JSME International Journal Series A Solid Mechanics and Material Engineering