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Sandbar Formation in Side-Diversion Channels

by Vincent Neary, (S.M.ASCE), Univ of Iowa, Iowa City, United States,
Brian Barkdoll, (S.M.ASCE), Univ of Iowa, Iowa City, United States,
A. Jacob Odgaard, (M.ASCE), Univ of Iowa, Iowa City, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

Prediction of sandbar formation in side-diversion channels is desirable in a wide range of river engineering problems. However, the mechanism by which they form is still not well understood despite the considerable amount of resources allocated annually to remove unwanted bars. To address this problem, an experimental study evaluated the effects of the main flow parameters on bar formation. The location, size and growth rate of bars was related to main channel bed roughness, the ratio of the discharge in the diversion channel to the discharge in the main channel, and the diversion angle. The trends established in this study should contribute to the development of quantitatively based design and operating strategies for controlling bar formation in diversion channels.

Subject Headings: Channels (waterway) | Shoals | Water discharge | Fluid flow | Channel flow | Sediment transport | Sand (hydraulic)

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