Abstract
Understanding of hydraulic mechanism on and around the side weir is essential for the facilities to be designed and to be maintained well. Although past studies have advanced our ability to estimate the overflow discharge from side weir, detailed study of the tree-dimensional turbulent structure in an open channel flow with overflow from a side weir has been lacking. Authors have carried out an experimental study of the three-dimensional flow structure in an open channel flow of an aspect ratio two with overflow from a side weir. In this study, we carried out similar study on the case of open channel flow with an aspect ratio of three. The study found some differences in secondary flow characteristics between the aspect ratio two and the aspect ratio three.
