Studies on Hydraulic Turbine Which Fishes Can Pass Through (Relationships between a rotating runner and fishes)

在日本，关于水涡轮机转轮与鱼类关系的研究很少，因为没有进行这种研究。当大坝建在河流中间时，河流被切断，许多鱼类，香鱼，梭子鱼，许多鲈鱼和另一种河流鱼类的生命周期被大坝破坏。它对我们的人类生活没有用处。许多水坝都有水力发电厂。如果鱼类能够安全地通过水轮机涡轮机的转轮，就可以消除阻碍鱼类上下游游的障碍。通过研究，认识到鱼类通过旋转的涡轮机转轮的可能性。但是，这一条件受到转轮特定转速和转轮内特定水流速度的限制。这些特殊的条件受到许多因素的影响。本研究解决了几个问题。这些结果在本文中详细描述。

Little studies of relationships between water turbine runners and fishes can be found in Japan because such researches are not carried out. The river is cut in middle when large dam is constructed in it. The life cycle of many kinds of fishes, ayu, sarmon, many basses and another river fishes is destroyed by the dam. It is not useful to our human-life. Many dams have water power plants. If fishes can safely pass through a rotating runner of water turbine, a barrier which blocks that fishes travel upstream and downstream can be eliminated. As the results, more micro, mini and large water turbines will be able to be set in many rivers.From our research, the possibility that fishes can pass through a rotating runner of water turbine was recognized. But the conditions are limited to special rotation speed of runner and special water velocity in a runner. These special conditions are affected by many factors. several problems are solved in this research. These results are described in the paper in details.