Laboratory Study of the Influence of Granules on Flow over a Sand Bed

Research Article| April 01, 1968 Laboratory Study of the Influence of Granules on Flow over a Sand Bed ROGER LeB HOOKE ROGER LeB HOOKE PRESENT ADDRESS: DEPT. OF GEOLOGY AND GEOPHYSICS, UNIV. MINNESOTA, MINNEAPOLIS, MINNESOTA Search for other works by this author on: GSW Google Scholar GSA Bulletin (1968) 79 (4): 495–500. https://doi.org/10.1130/0016-7606(1968)79[495:LSOTIO]2.0.CO;2 Article history received: 15 Feb 1967 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation ROGER LeB HOOKE; Laboratory Study of the Influence of Granules on Flow over a Sand Bed. GSA Bulletin 1968;; 79 (4): 495–500. doi: https://doi.org/10.1130/0016-7606(1968)79[495:LSOTIO]2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract A flume was used to study the effect of granules on the equilibrium of a stream flowing over a movable bed of fine sand. Addition of granules to flows over a dune-covered sand bed resulted in armouring of troughs between dunes, and in a decrease in the friction factor and sediment discharge. It is inferred that the latter two effects resulted from a decrease in amplitude of bed forms due to the armouring. Addition of granules to a flow over an initially flat sand bed caused an increase in both friction factor and sediment discharge. Similar results were obtained by Guy and others (1966, p. 72–73) for both the dune and flat bed configurations.During some runs a long low hump formed on the bed in a reach where granule concentration was slightly higher than average. By means of this hump, the depth and velocity were adjusted to yield a sediment discharge in the reach of high granule concentration that was equal to sediment discharge elsewhere in the flume. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.