Research Article
Jan 1970
Diffusion of Sediment in Developing Flow
Publication: Journal of the Hydraulics Division
Volume 96, Issue 1
Abstract
The suspension of sediment particles by turbulent eddy diffusion in a nonuniform flow region was studied, using the convective-diffusion equation as a mathematical model. A simplified form of the equation, for which mixing characteristics and flow velocities was assumed uniform, was found to accurately describe the sediment concentration profiles which had been measured in a 24-ft-long flume. Although diffusivities in the nonuniform region tended towards uniformity with downstream distance, the vertical diffusive transport rate was related to depth as a power law function. Measured diffusion coefficients were found to depend on the relative roughness of the mobile bed.
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Published In
Journal of the Hydraulics Division
Volume 96 • Issue 1 • January 1970
Pages: 109 - 123
Copyright
© 1970 American Society of Civil Engineers.
History
Published in print: Jan 1970
Published online: Feb 3, 2021
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Robert P. Apmann, AM.ASCE
Asst. Prof. of Engrg. and Appl. Sci., State Univ. of New York at Buffalo, Buffalo, N. Y
Ralph R. Rumer Jr., M.ASCE
Prof. of Engrg. and Appl. Sci., Chmn., Civ. Engrg. Dept., State Univ. of New York at Buffalo, Buffalo, N. Y
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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.