Abstract
It is important to evaluate the effect of vane works not only in the simple uniform bend but also in the reach of various forms in river. In this study we investigate the effects of vane works reducing scour depth in the compound channel whose plan form changes longitudinally. In this paper, at first we describe the idea of the design of vane works based on the recent topics of the flow and bed topography characteristics in a compound meandering channel, and show vane works fulfill their functions through flood from vane's effects in simple and compound channel flows. Bed variation in a channel with vane works is reproduced by using 3D-flow model considering drag and lift forces exerting on vanes.
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