Experimental database of the seabed roughness effect on the hydrodynamical behavior of a submarine cable under current and wave conditions

Date 2020
Temporal extent 2019 -2020
Author(s) Marty Antoine1, Germain GregoryORCID1, Gaurier BenoitORCID1, Facq Jean-Valery1, Bacchetti Thomas1
Affiliation(s) 1 : IFREMER, MARINE STRUCTURE LABORATORY, BOULOGNE SUR MER, FRANCE
DOI 10.17882/76522
Publisher SEANOE
Abstract

Submarine cable behaviour is experimentally studied in order to evaluate on-bottom stability of cables placed on rocky seabed with high roughness and submitted to combined wave and strong current.

For that purpose, hydrodynamic loads are measured on a fixed slender cylinder closely fixed to a horizontal plate, with or without large roughness. A specified set of load cases (forced oscillations, current, forced oscillation + current) is considered to assess the hydrodynamic loads acting on the cylinder placed near a wall for varying gap-to-diameter ratios. The roughness effects on cylinder loads and on the flow are studied in detail. The result show a significant difference between rough and smooth bottom configurations. Indeed, the loads measurements and hydrodynamic coefficients are significantly lower with the presence of a rough plate near the cylinder. Especially for drag and oscillatory drag coefficients, however the inertia coefficient presents less differences.

Licence CC-BY-NC
Data
File Size Format Processing Access
653 MB TEXTE Raw data Access on demand until 2021-12-31
Readme 2 MB PDF Open access
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How to cite 

Marty Antoine, Germain Gregory, Gaurier Benoit, Facq Jean-Valery, Bacchetti Thomas (2020). Experimental database of the seabed roughness effect on the hydrodynamical behavior of a submarine cable under current and wave conditions. SEANOE. https://doi.org/10.17882/76522