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Scour at the rear side of rubble mound revetments due to random wave overtopping: Laboratory experiments
Date
2024-10-01
Author
Yıldırım, Mehmet Emre
Yaman, Mert
Baykal, Cüneyt
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This study presents the physical model experiments on the wave overtopping induced bed level changes at an unprotected rear side of a rubble mound revetment with a crown wall. In the experiments, the wave conditions, the backfill material size, and the backfill depth (vertical distance from the crest level to the rear side bed level) are varied. Two mobility parameters, namely the densimetric overtopping discharge and the relative fall velocity, are introduced to represent the initiation of motion and suspension of the backfill material, respectively. The temporal evolution of scour depth at the rear side is related to the mobility parameter, the number of waves and the backfill depth utilizing regression analyses. The effect of the backfill depth on the scour is found very limited for the available data set. However, the time scale of the scour is found to be related with the backfill depth only. For the present data set, it varied within a range of 1500–16000 number of waves approximately, with an average of 5600 waves. An equilibrium scour profile is reached 3 to 4 times the time scale. The geometry of the scour profile is expressed in terms of the scour depth, based on the equilibrium scour profile data.
Subject Keywords
Rear side scour
,
Rubble mound revetment
,
Wave overtopping
URI
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85195387545&origin=inward
https://hdl.handle.net/11511/110328
Journal
Ocean Engineering
DOI
https://doi.org/10.1016/j.oceaneng.2024.118401
Collections
Department of Civil Engineering, Article
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BibTeX
M. E. Yıldırım, M. Yaman, and C. Baykal, “Scour at the rear side of rubble mound revetments due to random wave overtopping: Laboratory experiments,”
Ocean Engineering
, vol. 309, pp. 0–0, 2024, Accessed: 00, 2024. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85195387545&origin=inward.