Experimental and numerical characterization of an oyster farm impact on the flow

Type Article
Date 2011-09
Language English
Author(s) Gaurier BenoitORCID1, 2, Germain GregoryORCID1, 2, Kervella Youen3, 4, Davourie Julia1, Cayocca Florence3, Lesueur Patrick4
Affiliation(s) 1 : IFREMER, Hydrodynam & Metocean Serv, F-62200 Boulogne Sur Mer, France
2 : Univ Lille Nord France, F-59000 Lille, France
3 : IFREMER, PHYSED Lab, F-29280 Plouzane, France
4 : Univ Caen, CNRS, INSU, UMR 6143,Lab M2C, F-14000 Caen, France
Source European Journal Of Mechanics B-fluids (0997-7546) (Gauthier-villars/editions Elsevier), 2011-09 , Vol. 30 , N. 5 , P. 513-525
DOI 10.1016/j.euromechflu.2011.05.001
WOS© Times Cited 5
Keyword(s) Sediment dynamics, Oyster table, LDV measurement, Computational fluid dynamics, Porosity, Boundary layer
Abstract Shellfish farming, particularly oyster farms, suffers from strong siltation phenomena which are harmful to the production of shellfish. The lack of knowledge about the impact of an oyster farm on the wave propagation and on the flow remains a significant difficulty for the comprehension of sediment transport processes in coastal zones. These effects are one of the possible sources of sedimentation. The study presented here focuses on describing finely hydrodynamical phenomena (velocity fields, turbulence parameters) around oyster tables. The analysis is based on experimental trials carried out in a flume tank on reduced models of oyster tables. Experiments highlight the flow perturbations in the near field and constitute a database for validation of numerical models developed at the same time. The model based on Navier-Stokes equations offers the possibility to study the impact of more realistic table lengths on the flow and to simulate the perturbation produced by a group of oyster tables. Both experimental and numerical results are presented in this paper. (C) 2011 Elsevier Masson SAS. All rights reserved.
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