Research Article
Jul 1976
Minimum Unit Stream Power and Fluvial Hydraulics
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 102, Issue 7
Abstract
Fluvial hydraulics is complex because the velocity, slope, depth, and channel roughness are all subject to change. The unit stream power, defined as the rate of potential energy expenditure per unit weight of water, required to transport a given sediment load is sensitive to water depth when the sediment concentration is low. The interdependence between unit stream power and water depth decreases as sediment concentration increases. A computer program is used to generate different combinations of velocity, slope, depth, and unit stream power for a given sediment load. The generated unit stream power in the lower flow regime either has a clear minimum value at a particular depth or approaches a minimum value for a given sediment load. These agreements suggest that an alluvial channel in the lower flow regime adjusts its velocity, slope, depth, and roughness in such a manner that a given sediment load can be transported with the minimum amount of unit stream power.
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Published In
Journal of the Hydraulics Division
Volume 102 • Issue 7 • July 1976
Pages: 919 - 934
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: Jul 1976
Published online: Feb 3, 2021
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Authors
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Chih Ted Yang, M.ASCE
Hydr. Engr., U.S. Army Corps of Engrs., North Central Div., Chicago, Ill.
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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.
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.