아이스하버식 어도 내 수리특성에 관한 수치해석연구

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 5 ~ 3×10 5 .