Effect of underwater sill height against flow patterns in order to reduce sedimentation in navigation channel and basins

Port development contributes to economic development when the ports are smoothly operated on schedule. Most of ports have sedimentation problem, especially berth that have a jetty type where the navigation channel and basins located in the surf zone. A method to check sedimentation of navigation channel and basins by installing Underwater Sill (UWS). The aim of this study is to identify the effect of UWS height on horizontal direction of vertical velocity profile. Research results indicate that the effect of UWS structures with height variations that cause changes in velocity distribution, such as a significant increase of speed in upstream and top of the structure. The three tested models showed that UWS with a certain height indicated larger capacity in deflecting the flow to the side of the structure. This was indicated by the small percentage of flow passing through the top of the structure. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021.