Scour at the rear side of rubble mound revetments

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2021-8-17

Author

Yıldırım, Mehmet Emre

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In this study, an examination of the scour at the rear side of rubble mound revetments resulting from wave overtopping was performed. The effects of backfill materials, backfill height, and wave properties on the process were investigated through physical model experiments. One of the main findings of the study is that as the storm duration increases, the maximum scour depth eventually reaches an equilibrium state. Also, as the overtopping discharge increases, the scour depth occurs deeper. Estimation of geometrical features of the scour and accretion was acquired by taking overtopping discharge amount and backfill height as governing parameters. Normalized scour profiles were obtained and grouped into four. In addition, the mean normalized scour profile was presented. Prediction of time-related scour parameters, which are the time scale and the time needed to observe maximum scour depth, were presented. The time scale of the scour was found independent of overtopping discharge amount. It was seen that three different wave series with the same wave properties created different scour profiles due to different overtopping discharge amounts.

Subject Keywords

Wave overtopping, Rubble mound revetment, Scour

URI

https://hdl.handle.net/11511/92044

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

M. E. Yıldırım, “Scour at the rear side of rubble mound revetments,” M.S. - Master of Science, Middle East Technical University, 2021.