Research Article
May 1969
Dispersion of Silt Particles in Open Channel Flow
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 95, Issue 3
Abstract
The dispersion process for sediment particles in a two-dimensional turbulent shear flow is formulated in two differential equations, one for particles suspended in the flow and the other for those deposited on the bed. Exchange of particles between the bed and the flow is permitted. Using the Aris moment transformations, the equations are converted to a more tractable system of equations which are solved by numerical methods with the aid of a digital computer, for the zero'th, first, second and third moments of the longitudinal concentration distributions. Various combinations of boundary and other input conditions are imposed and their effects on the dispersion process are demonstrated. The results of the numerical solutions together with the results of earlier dispersion experiments with silt particles and fluorescent dyes show that the tendency of the silt particles toward deposition and temporary storage on the bed can profoundly affect the longitudinal dispersion process.
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Published In
Journal of the Hydraulics Division
Volume 95 • Issue 3 • May 1969
Pages: 1009 - 1038
Copyright
© 1969 American Society of Civil Engineers.
History
Published in print: May 1969
Published online: Feb 3, 2021
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Authors
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William W. Sayre, M.ASCE
Research Hydr. Engr., Iowa Institute of Hydraulic Research, Univ. of Iowa, Iowa City, Iowa
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