呼び水式魚道下流における流れとそれに対する魚の挙動(環境・地球・宇宙河川・湖沼・沿岸環境(1),一般講演)

概要

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The priming water that is installed on beside of the fish-way, has function to lead fish to the fish-way. However, the circulation flow is occasionally formed downstream of the fish-way. Its flow reduce the effectiveness of the priming water and is formed when Fr_R becomes more 3.59 times Fr_L. However, by setting up a division wall, the circulation flow is controlled. As a result, the run-up and leading ratio increase. Therefore, the priming velocity becomes 3 times overflow velocity when fish easily run up. In that occasion, the priming velocity becomes 21 times the number of a given fish's length. As well, when the priming water inclines, it becomes easy for the circulation flow to be formed
日本流体力学会の論文
2009-09-02