Session1: River Engineering and Management
Title: FLOW CHARACTERISTICS OF COMPOUND OPEN CHANNEL FLOW WITH DISCONTINUOUS FLOOD PLAIN
Kenshin Teyama, Katsutoshi Watanabe
An embayment set up in the river are connected to the main stream of the river, but are terrain that looks like a pond surrounded by river structures. It provides a stable habitat for aquatic organisms such as fish, and is a place where various vegetation breeds. To conserve the environment inside the wand, it is necessary to understand the structure of the flow inside the wand. During a flood, the embayment may be submerged, and the flow field is considered to be a complex three-dimensional turbulent flow consisting of backward facing step flow with an end and a side wall flow. In this study, in order to reproduce the flow field of a submerged embayment, a compound open channel flow with discontinuous flood plain was created, and the characteristics of the flow structure were examined by measuring the flow velocity and flow visualization.