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논문 기본 정보

저자정보
(과학기술연합대학원대학교) (과학기술연합대학원대학교) (한국수자원공사) (한국수자원공사) (과학기술연합대학원대학교)
저널정보
한국유체기계학회 한국유체기계학회 논문집 한국유체기계학회 논문집 제21권 제5호(통권 제110호)
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    초록·키워드

    This paper presents a geometrical parametric study on the hydraulic performance characteristics of a small-scale Francis hydro turbine model. The upper and lower clearances on the variable guide vane and the surface roughness on each component of the turbine model were considered as geometric parameters. Three-dimensional steady-state Reynolds-averaged Navier-Stokes (RANS) calculations with a shear stress transport (SST) turbulence model were performed to evaluate the hydraulic performance characteristics by varying these geometric parameters. Variable guide vane clearances and surface roughness were applied, respectively and simultaneously, to conduct flow analysis of the small-scale Francis hydro turbine model. Additionally, the loss distribution for each component of the turbine model was analyzed to obtain a better understanding of the effects of hydraulic performance on surface roughness. The results indicated it could be applied to the design and manufacture of a small-scale Francis hydro turbine model as the major geometric parameters.

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