Data/hora: 13/06/2024 01:18:31

Provedor de dados: | 5
País: | France
Título: | Modélisation et analyse numérique du couplage filet-écoulement hydrodynamique dans une poche de chalut
Autores: | Pichot, Geraldine.
Data: | 2007-12-06
Ano: | 2007
Palavras-chave: | Finite Element Method; Numerical simulations; Variational formulations; Modelling; Fluid/structure interactions; Turbulence; Fluid mechanics; Selectivity of fishing gear; Méthode des éléments finis; Simulations numériques; Formulations variationnelles; Modélisation; Intéractions fluide/structure; Turbulence; Mécanique des fluides; Sélectivité des engins de pêche.
Resumo: | We are interested in the numerical simulation of the catch process at the end part of a trawl. The study of previous works emphasizes the lack of a convincing flow model. The need of a physical understanding of the flow leads us to perform experimental campaigns around a rigid cod-end net model, whose results are given in the manuscript. We propose a model based on the Navier-Stokes/Brinkman equations coupled to an equation for the turbulent kinetic energy by the means of an eddy viscosity, with appropriate boundary conditions. Existence of a weak solution to our coupled problem is proved in dimension 2. Then, we present the axisymmetric code we developed, called SeaNet. We set the parameters of the model and validate the code by comparison with the experimental results.
Tipo: | Text
Idioma: | Francês
Identificador: | http://archimer.ifremer.fr/doc/2007/these-3350.pdf
Editor: | Université de Rennes 1
Relação: | http://archimer.ifremer.fr/doc/00000/3350/
Formato: | application/pdf