Basic Study of Tidal Stream Electricity Generation for Obatake Strait

对大竹海峡的潮流分布进行了观测。由于海峡和既有桥墩的复杂地理条件，桥墩附近有三维流动。溪流向深度的减少就不那么严重了。因此，海峡的能量是预期的5倍，水轮机可以无损地安装到深处。研究了各种大流士水轮机的性能。为了提高他们发动革命的难度，进行了辅助实验。这有助于很好地启动革命，有效地利用低功率。根据这些结果估计了预期的电量。只有解释观测潮汐的大竹潮汐的流速才能用CFD计算。

Tidal stream distribution in Obatake strait was observed for electricity generation. There are 3-dimensional flows near a bridge's piers due to complicated geography of the strait and the existing piers. Depth-ward reducing of the stream isn't so much. So, the strait has 5 times higher energy than expected and a turbine can be set deep without a loss.Various Darrieus water turbines' properties were investigated. To improve their difficulty of starting revolution, assist experiment was carried out. It resulted in helping well starting revolution to harness low stream power efficiently. Expecting electricity was estimated from these results. Only flow speed of the tide in Obatake which explains the observed tide could be calculated by CFD.