Research Article
Feb 1976
Channel Flow Over Permeable Beds of Graded Spheres
Publication: Journal of the Hydraulics Division
Volume 102, Issue 2
Abstract
Tests were carried out to determine the velocity distribution and the hydraulic roughness in flows over 20 permeable beds made up of different sizes and gradings of spherical particles. Corresponding tests were carried out to determine the surface rugosity and the permeability of these beds. The investigation showed that the virtual zero of the velocity profile was depressed below the surface of the bed due to flow occurring in the permeable bed material. Despite this the hydraulic roughness of the permeable beds was higher than that for equivalent impermeable beds of the same surface rugosity. There was strong correlation between the hydraulic roughness of permeable beds and a simple parameter which included both a characteristic particle size of the bed material, and the permeability.
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Information
Published In
Journal of the Hydraulics Division
Volume 102 • Issue 2 • February 1976
Pages: 207 - 222
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: Feb 1976
Published online: Feb 3, 2021
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Authors
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Anthony F. E. Zagni
Prin. Engr., Howard Humphreys and Sons, Consulting Engineers, Reading, England
Kenneth V. H. Smith, M.ASCE
Sr. Leet. in Hydraulic Engrg., Univ. of Southampton, England
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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.