Brief Report
Sep 1978
Scour of Bed Material in Very Rough Channels
Publication: Journal of the Hydraulics Division
Volume 104, Issue 9
Abstract
Experiments with densely packed uniform spheres have confirmed that the initiation of motion of bed material is affected by the relative roughness of the channel. At shallow depths, larger values of the shields. parameter are required to initiate the motion. This was explained by the reduction of nondimentional velocities, u/u*, at the bed level with the increase of d/h. The effective values of the instantaneous flow velocity are thus achieved at higher bed shear stresses in comparison with flows at mild slopes.
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Published In
Journal of the Hydraulics Division
Volume 104 • Issue 9 • September 1978
Pages: 1345 - 1349
Copyright
© 1978 American Society of Civil Engineers.
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Published in print: Sep 1978
Published online: Feb 3, 2021
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Mehmetcik Bayazit
Prof., Dept. of Hydraulics and Water Power, Technical Univ., Istanbul, Turkey
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.