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	Provedor de dados ArchiMer (5) BABT (1) Autor Barrier, Nicolas (1) Chardard, Frederic (1) Charria, Guillaume (1) Dias, Frederic (1) Goberville, Eric (1) Grossteffan, Emilie (1) Lalire, Maxime (1) Le Roux, Jean-francois (1) Machado,Leandro (1) Mantha,Vishveshwar Rajendra (1) Marinho,Daniel Almeida (1) Nguyen, Hai Yen (1) Petton, Sebastien (1) Pichot, Geraldine (1) Poppeschi, Coline (1) Quemener, Loic (1) Ramos,Rui Jorge (1) Repecaud, Michel (1) Rimmelin-maury, Peggy (1) Rouboa,Abel Ilah (1) Mais... Palavra-chave Numerical simulations (6) Simulations numériques (3) Bay of Brest (1) Cohérence spatio temporelle (1) Computational Fluid Dynamics (1) Courants marins (1) Densité spectrale (1) Dispersal (1) Dispersion (1) Ecologie spatiale (1) Extreme events (1) Female (1) Finite Element Method (1) Fluid mechanics (1) Fluid/structure interactions (1) Forced Korteweg-de Vries equation (1) Forces (1) Formulations variationnelles (1) Free-surface flows (1) Gaussian processes (1) Mais... Tipo do documento Text (5) Info:eu-repo/semantics/article (1) Ano 2020 (1) 2017 (1) 2012 (1) 2011 (1) 2009 (1) 2007 (1) Mais... País France (5) Brazil (1) Idioma Francês (3) Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 6 Primeira ... 1 ... Última Climatologie fine des systèmes de vagues pour l'étude des systèmes houlomoteurs ArchiMer Saulnier, Jean Baptiste. This work focuses on the refinement of sea-states spectral characterisation in the frame of the development of wave energy converters (WECs). Until now, this characterisation has been limited to the consideration of basic global parameters such as the significant wave height and mean wave period. The present work namely underlines - thanks to simplified numerical models - that such a description is not sufficient to account for the performance of WECs, for they still exhibit a large variability in terms of mean production while wave energy and period are fixed. It is therefore needed to refine this description by introducing new wave characteristics, such as the wave groupiness, which is itself related to the sea-state's spectral bandwidth. The classical -... Tipo: Text Palavras-chave: Modèles stochastiques; Processus gaussiens; Simulations numériques; Cohérence spatio temporelle; Systèmes de vagues; Densité spectrale; État de mer; Largeur spectrale; Groupement de vagues; Systèmes houlomoteurs; Énergie des vagues; Stochastic models; Gaussian processes; Numerical simulations; Spatiotemporal coherence; Wave system; Spectral density; Sea state; Spectral bandwidth; Wave groupiness; WECs; Wave energy. Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/these-7414.pdf Effect of wearing a swimsuit on hydrodynamic drag of swimmer BABT Marinho,Daniel Almeida; Mantha,Vishveshwar Rajendra; Vilas-Boas,João Paulo; Ramos,Rui Jorge; Machado,Leandro; Rouboa,Abel Ilah; Silva,António José. The purpose of this study was to analyse the effect of wearing a swimsuit on swimmer's passive drag. A computational fluid dynamics analysis was carried out to determine the hydrodynamic drag of a female swimmer's model (i) wearing a standard swimsuit; (ii) wearing a last generation swimsuit and; (iii) with no swimsuit, wearing light underwear. The three-dimensional surface geometry of a female swimmer's model with different swimsuit/underwear was acquired through standard commercial laser scanner. Passive drag force and drag coefficient were computed with the swimmer in a prone position. Higher hydrodynamic drag values were determined when the swimmer was with no swimsuit in comparison with the situation when the swimmer was wearing a swimsuit. The last... Tipo: Info:eu-repo/semantics/article Palavras-chave: Human body; Numerical simulations; Computational Fluid Dynamics; Forces; Female. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000600007 Extreme coastal events linked with climate variation. Understanding low salinity episodes in the Bay of Brest, north-eastern Atlantic ArchiMer Poppeschi, Coline; Charria, Guillaume; Unterberger, Maximilian; Rimmelin-maury, Peggy; Goberville, Eric; Barrier, Nicolas; Petton, Sebastien; Grossteffan, Emilie; Repecaud, Michel; Quemener, Loic; Theetten, Sebastien; Le Roux, Jean-francois; Treguer, Paul. Aims - To detect and characterise extreme events in a coastal ecosystem by combining in situ high-frequency observations and high-resolution numerical simulations -To describe the interannual variability of extreme events in a context of climate change  -To quantify the links between extreme low salinity episodes and both large and local scale processes, using weather regimes, precipitations and river runoffs as proxies of hydro-climate forcing Tipo: Text Palavras-chave: In-situ observations; High and low frequency measurements; Extreme events; Numerical simulations; Bay of Brest; Weather regimes.. Ano: 2020 URL: https://archimer.ifremer.fr/doc/00631/74346/73999.pdf Modélisation et analyse numérique du couplage filet-écoulement hydrodynamique dans une poche de chalut ArchiMer Pichot, Geraldine. 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... Tipo: Text 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. Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/these-3350.pdf Stability of some stationary solutions to the forced KdV equation with one or two bumps ArchiMer Chardard, Frederic; Dias, Frederic; Nguyen, Hai Yen; Vanden-broeck, Jean-marc. Free-surface flows past submerged obstacles in a channel are considered. The fluid is assumed to be inviscid and incompressible and the flow to be irrotational. The first-order approximation of long nonlinear surface waves over one or two bumps results in a forced Korteweg-de Vries (fKdV) equation. Solutions of the stationary fKdV equation are constructed and their stability is studied, either analytically or numerically. These various solutions include solitary waves over a single bump, solitary waves with two humps over a double bump, table-top solutions over a double bump and fronts. Tipo: Text Palavras-chave: Forced Korteweg-de Vries equation; Free-surface flows; Numerical simulations; Stability; Topography. Ano: 2011 URL: http://archimer.ifremer.fr/doc/00037/14873/12348.pdf STAMM : un modèle individu-centré de la dispersion active des tortues marines juvéniles. Applications aux cas des tortues luths du Pacifique Ouest et de l’Atlantique Nord-Ouest et aux tortues caouannes de l’ouest de l’océan Indien. ArchiMer Lalire, Maxime. Sea turtles are increasingly threatened by the direct and indirect effects of human activities. Their life cycle is complex, shared between various, and often very distant, habitats. Their conservation therefore requires identifying the habitats occupied at each stage of life and the migration routes between these different habitats. While the spatial ecology of adult turtles is relatively well known, particularly through satellite monitoring, the situation is not the same for juveniles which pelagic development phase remains largely unobserved. In that context, numerical simulation constitutes an appropriate tool to explore the dispersal of juvenile sea turtles from their natal beaches. Until now, simulations were mostly performed under the assumption... Tipo: Text Palavras-chave: Courants marins; Dispersion; Ecologie spatiale; Modélisation lagrangienne; Modèles de mouvement; Modèles d'habitat; Simulations numériques; Tortues marines juvéniles; Tortue luth; Tortue caouanne; Oceanic currents; Dispersal; Spatial ecology; Lagrangian modelling; Movement modelling; Habitat modelling; Numerical simulations; Juvenile sea turtles; Leatherback turtle; Loggerhead turtle.. Ano: 2017 URL: https://archimer.ifremer.fr/doc/00497/60912/64263.pdf Registros recuperados: 6 Primeira ... 1 ... Última

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