Research Article
Jan 1972
Einstein Bed-Load Function at High Sediment Rates
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 98, Issue 1
Abstract
In alluvial channels consisting of fine sand beds, almost all the sediment load moves in suspension with high concentrations near the bed. These high concentrations affect many of the flow characteristics: the roughness is changed, the velocity profiles are altered, the density and viscosity of the fluid are increased, and the particle fall velocity and the von Karman coefficient are reduced. The paper describes how the Einstein bed-load function can be modified in order to better describe flows with high sediment rates of fine grain. Instead of a constant value of von Karman's coefficient of 0.4, both the distributions of velocity and suspended sediment use a variable value of von Karman's coefficient which is a function of a dimensionless parameter but becomes 0.4 when the parameter is larger than 1.
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Published In
Journal of the Hydraulics Division
Volume 98 • Issue 1 • January 1972
Pages: 137 - 151
Copyright
© 1972 American Society of Civil Engineers.
History
Published in print: Jan 1972
Published online: Feb 3, 2021
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Authors
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Hans Albert Einstein, M.ASCE
Prof. of Hydr. Engrg., Univ. of California, Berkeley, CA
Farouk M. Abdel-Aal, AM.ASCE
Jr. Specialist, Univ. of California, Berkeley, CA
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