Analytical Study on Steepness of Ripples and Dunes
Publication: Journal of Hydraulic Engineering
Volume 112, Issue 3
Abstract
The mechanics of the limiting‐equilibrium profiles of ripples and dunes are presented. The analysis is based on low sediment transport rates, in which the sediment essentially moves as bedload. The sediment transport rate is taken as proportional to some power, m, of the local velocity. A two‐dimensional flow is assumed in which velocities are computed on the basis of a discontinuous potential flow model and, on the basis of an incompressible, rotational inviscid flow model. A family of curves representing the relationship between the limiting steepness of bedforms and the relative depth of flow for various values of m is presented. The analytical results are compared with the observed data, and the comparison shows a fair agreement.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 112 • Issue 3 • March 1986
Pages: 220 - 236
Copyright
Copyright © 1986 ASCE.
History
Published online: Mar 1, 1986
Published in print: Mar 1986
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