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고선호(S.H. Ko),최학규(H.K. Choi),이희범(H.B. Lee),이신형(S.H. Rhee) 한국전산유체공학회 2015 한국전산유체공학회지 Vol.20 No.3
A fishway is a structure on or around artificial and natural barriers, such as dams, locks and waterfalls, to help fishes natural migration. In this paper, a computational fluid dynamics (CFD) code, termed SNUFOAM is used to analyze vertical hydraulic characteristic of rollway of fishway. Volume-of-fluid (VOF) method was used to handle free-surface. It is important to determine the factors influencing flow characteristics in fishway because fish use directional information from the flow characteristics to navigate through fishway. Fishway was modeled in 2-D and the influence of the stream velocity, slope, and weir height of fishway was tested. In results, the transition Reynolds number was 2×10<SUP>5</SUP> ~ 3×10<SUP>5</SUP>.