Abstract
The object of the present study is to investigate 3-D turbulent structure in a meandering compound open-channel flow with floodplains. This complex flow consists of a meanderingmain-channel flow and the associated straight floodplain flows, and thus the significant interactions areobserved between the meandering flow in a lower-stage and the straight flow in a higher-stage. It is therefore very important to reveal that the interaction may have strong effects on turbulent structure and the transport of suspended sediment In particular, it is inferred strongly that hydrodynamic characteristics vary significantly in the transition region from the straight to meandering channels.
In this study, the detailed turbulence measurements were conducted by using 3-Delectromagnetic velocimetry. As the results, the distributions of bed-shear stress and velocity components and the relation between the velocity and the corresponding turbulence were examined in the straight to meandering compound open-channel flows.
