Abstract
Rivers meander with various curvature. Many rivers have a compound cross section composed of main channel and flood channel. In such a compound meandering channel, there occurs exchange of flow between main channel and flood channel. Thus, the compound meandring channel flow shows hydraulic phenomenon different from that of in-bank flow.
In this paper, a large-scale experimental channel of flat rigid bed with compound meandering was used to meansure flow in detail. This experiment clarified the hydraulic characteristics of compound meandering channel flow, such as three-dimensional flow structure, discharge of a main channel, growth and decay processes of secondary flow, and so on.
