Turbulent Sediment Transport Over a Flat Bottom Using Momentum Balance

[+] Author and Article Information
D. A. Drew

Department of Mathematics, Rensselaer Polytechnic Institute, Troy, N. Y.

J. Appl. Mech 42(1), 38-44 (Mar 01, 1975) (7 pages) doi:10.1115/1.3423550 History: Received October 01, 1972; Online July 12, 2010


The turbulent flow of a sediment-fluid mixture over a flat bottom is studied using momentum balance. The in-the-small forces included are gravity, buoyancy, and a linear drag. A turbulent average is applied and mixing length theory is used for the resulting Reynolds stresses. Assuming small concentrations and small still water settling velocity, the resulting velocity profile is logarithmic; the sediment concentration profile is relatively constant near the bottom, and drops off rapidly above a certain level predicted by the theory. Numerical and asymptotic results are discussed.

Copyright © 1975 by ASME
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