Research Article
Apr 1981
Self-Formed Straight Channels in Sandy Beds
Publication: Journal of the Hydraulics Division
Volume 107, Issue 4
Abstract
The hydraulic geometry and the local features of straight, relatively wide self-formed channels composed of sandy bed are studied in laboratory flumes. Introduction of one loose and the other rigid bank in experiments excludes the tendency toward meanders and provides good examples to test hydraulic regime relations. The experiments support a few regime relations derived rationally. The transverse bed shapes in equilibrium have a universal profile regardless of initially-molded cross section, discharge of flow, and sand diameter within the scope of the experiments. A theoretical analysis of secondary currents in straight channels provides reasonable interpretation of the local features of self-formed channels such as the longitudinal sand ridges, and this analysis suggests the insignificant effect of secondary currents on the size of self-formed channels.
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Published In
Journal of the Hydraulics Division
Volume 107 • Issue 4 • April 1981
Pages: 389 - 406
Copyright
© 1981 American Society of Civil Engineers.
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Published in print: Apr 1981
Published online: Feb 3, 2021
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Authors
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Syunsuke Ikeda, M.ASCE
Assoc. Prof., Dept. of Foundation Engrg., Saitama Univ., Urawa, Saitama, Japan
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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.
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.