Effect of Roughness of Mussels on Cylinder Forces from a Realistic Shape Modelling

Type Article
Date 2021-06
Language English
Author(s) Marty AntoineORCID1, Schoefs FranckORCID2, Soulard Thomas3, Berhault Christian4, Facq Jean-Valery1, Gaurier BenoitORCID1, Germain GregoryORCID1
Affiliation(s) 1 : Ifremer, Marine Structure Laboratory, 150 Quai Gambetta, 62200 Boulogne sur Mer, France
2 : Research Institute of Civil Engineering and Mechanics, Sea and Litoral Research Institute, Ecole Centrale de Nantes, Université de Nantes, CNRS, 44322 Nantes, France
3 : Laboratoire de Recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique, Sea and Littoral Research Institute, Ecole Centrale de Nantes, University of Nantes, CNRS, 44322 Nantes, France
4 : Scientific Expert, Self-Employed, 83140 Six-Fours-les-Plages, France
Source Journal Of Marine Science And Engineering (2077-1312) (MDPI AG), 2021-06 , Vol. 9 , N. 6 , P. 598 (18p.)
DOI 10.3390/jmse9060598
WOS© Times Cited 12
Note This article belongs to the Special Issue Fluid/Structure Interactions
Keyword(s) marine growth, hydrodynamic loading, roughness, mussels, morison coefficients

After a few weeks, underwater components of offshore structures are colonized by marine species and after few years this marine growth can be significant. It has been shown that it affects the hydrodynamic loading of cylinder components such as legs and braces for jackets, risers and mooring lines for floating units. Over a decade, the development of Floating Offshore Wind Turbines highlighted specific effects due to the smaller size of their components. The effect of the roughness of hard marine growth on cylinders with smaller diameter increased and the shape should be representative of a real pattern. This paper first describes the two realistic shapes of a mature colonization by mussels and then presents the tests of these roughnesses in a hydrodynamic tank where three conditions are analyzed: current, wave and current with wave. Results are compared to the literature with a similar roughness and other shapes. The results highlight the fact that, for these realistic roughnesses, the behavior of the rough cylinders is mainly governed by the flow and not by their motions.

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Marty Antoine, Schoefs Franck, Soulard Thomas, Berhault Christian, Facq Jean-Valery, Gaurier Benoit, Germain Gregory (2021). Effect of Roughness of Mussels on Cylinder Forces from a Realistic Shape Modelling. Journal Of Marine Science And Engineering, 9(6), 598 (18p.). Publisher's official version : https://doi.org/10.3390/jmse9060598 , Open Access version : https://archimer.ifremer.fr/doc/00696/80851/