VARIATION OF SEDIMENT SUSPENSION IN OSCILLATORY FLOWĬoastal Engineering Proceedings: No. 19 (1984): Proceedings of 19th Conference on Coastal Engineering, Houston, Texas, 1984. THE PHYSICAL BASIS OF THE MILD-SLOPE WAVE EQUATIONĬoastal Engineering Proceedings: No. 12 (1970): Proceedings of 12th Conference on Coastal Engineering, Washington, D.C., 1970. Flow parameters are a-jjj/k and RE = U-|j_ ai~/v, a-]m and U-|m being maximum bottom amplitude and velocity according to first order potential wave theory, k is the Nikuradse roughness parameter.Ĭoastal Engineering Proceedings: No. The main results of the study are presented in three diagrams giving flow regimes, friction factors and boundary layer thicknesses.
Values for the wave friction factor and the wave boundary layer thickness are also proposed. The aim is therefore to make it possible to determine the proper flow regime for a pure short-period wave motion over a given bed. This is not necessarily the case in a hydraulic model. In nature the wave boundary layer will always be rough turbulent.
This paper is an attempt to re-evaluate and systematize the many observations and the rather few detailed measurements of the phenomenon. This fact is reflected in the wealth of papers on the subject the list of references given herein presents a minor selection only. In the last two decades the problem of wave height damping due to bottom friction has received increasing attention among near-shore oceanographers.
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