Research Article
Oct 1973
Incipient Motion and Sediment Transport
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 99, Issue 10
Abstract
A review of existing literature reveals some disadvantages of using Shields diagram as the criterion for incipient motion of sediment particles on an alluvial bed. A new criterion based on average flow velocity, fall velocity, and shear velocity Reynolds number is proposed herein with the supporting data collected by different investigators. This new criterion is used to calculate the dimensionless critical unit stream power in a dimensionless unit stream power equation for sediment transport. The dimensionless unit stream power is the ratio of the time rate of potential energy expenditure per unit weight of water and the terminal fall velocity of the sediment. More than 1,000 sets of data from both laboratory flumes and natural streams published by different authors are used to support this dimensionless equation for sediment transport.
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Published In
Journal of the Hydraulics Division
Volume 99 • Issue 10 • October 1973
Pages: 1679 - 1704
Copyright
© 1973 American Society of Civil Engineers.
History
Published in print: Oct 1973
Published online: Feb 3, 2021
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Authors
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Chih Ted Yang, AM.ASCE
Assoc. Professional Sci., Illinois State Water Survey, and Water Resources Center, Univ. of Illinois, Urbana, Ill
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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.