Author(s): Mao Xi; Li Jia; An Ruidong
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Keywords: Fishway; Geometry; Baffle; Velocity; Slope
Abstract: The characteristics of the flow in vertical slot fishway depend mainly on the specific pool design, such as the geometry of the pool. This paper presents the results of a study on comparison between four different designs of vertical slot fishways with or without central baffle, and with two different slopes. The four different designs are: the first design, or original design, without central baffle, which slope is 5.4%; the second design, without central baffle, which slope is 2.7%; the third design, with central baffle, which slope is 5.4%; the fourth design, with central baffle, which slope is2.7%. The results indicated that central baffle can not cut down the value of the velocity substantially, but it can stabilize the flow pattern, and it can make energy dissipation uniform. The disparity between two slopes is obviously. We draw a conclusion that the fourth design in this paper is beneficial to the migration of the fish, in terms of velocity and flow pattern.
Year: 2012