透過性防波堤を有する小規模港湾の海水交換機能に関する研究

抄録

The authors have already shown that breakwaters with slope channel and step channel effectively reduce transmitted wave height when compared with a straight channel, and the flow rate through the breakwater with channel can be estimated from the non-linear Darcy's law.
In this study, the authors examined the ability of the breakwater with channel to exchange water in the model harbor in a three-dimensional wave basin. The authors also proposed numerical model for predicting the rate of water exchange in the harbor and the applicability of the proposed model was also examined using experimental results. The time required to change whole water in the harbor can be estimated from the water volume in the harbor, the representative longshore current velocity, and the opening ratio of the channel in the breakwater.