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	Provedor de dados ArchiMer (4) Autor Scolan, Yves-marie (4) Le Boulluec, Marc (3) Fourestier, Gaspard (2) Magaldi, Philippe (2) Chalony, Sebastien (1) Hascoët, Romain (1) Ivanoff, Nicolas (1) Jacques, Nicolas (1) Le Roux, Dominique (1) Ohana, Jeremy (1) Santagostini, Timothee (1) Santagostini, Timothée (1) Tancray, Aurelien (1) Tassin, Alan (1) Mais... Palavra-chave Bathtub vortex (1) Cavity flow (1) Flow separation (1) InterFoam (1) Laser Doppler velocimetry (1) Modified Logvinovich model (1) NACA foil (1) Tourbillon de vidange (1) Vélocimétrie laser (1) Wagner's model (1) Water entry (1) Mais... Tipo do documento Text (4) Ano 2019 (1) 2017 (1) 2016 (2) País France (4) Idioma Francês (3) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última A two-dimensional analytical model of vertical water entry for asymmetric bodies with flow separation ArchiMer Hascoët, Romain; Jacques, Nicolas; Scolan, Yves-marie; Tassin, Alan. The vertical water entry of asymmetric two-dimensional bodies with flow separation is considered. As long as there is no flow separation, linearised Wagner's theory combined with the modified Logvinovich model has been shown to provide computationally fast and reliable estimates of slamming loads during water entry. Tassin et al. [11] introduced the fictitious body continuation (FBC) concept as a way to extend the use of Wagner's model to separated flow configurations, but they only considered symmetric bodies. In the present study, we investigate the ability of the FBC concept to provide accurate estimates of slamming loads for asymmetric bodies. In this case, flow separation may not occur simultaneously on both sides of the body. During an intermediate... Tipo: Text Palavras-chave: Water entry; Flow separation; Wagner's model; Cavity flow; Modified Logvinovich model; NACA foil. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00514/62543/66961.pdf Evaluation experimentale des caracteristiques hydrodynamiques de plaques anti-pilonnement ArchiMer Le Boulluec, Marc; Le Roux, Dominique; Ohana, Jeremy; Ivanoff, Nicolas; Chalony, Sebastien; Tancray, Aurelien; Scolan, Yves-marie. Tank tests of circular horizontal plates, solid and porous, are conducted in forced heave motion and under the action of incident waves in fixed configuration. Hydrodynamic coefficients for added inertia and drag are identified from experimental results. Their dependency with the Keulegan Carpenter number and other parameters is evaluated. The acquired data open the possibility of additional investigations and assessment with numerical calculations in viscous fluid (CFD). Tipo: Text Ano: 2016 URL: http://archimer.ifremer.fr/doc/00392/50350/51046.pdf Modélisation expérimentale et numérique d'un tourbillon de vidange avec injection en régime supercritique ArchiMer Fourestier, Gaspard; Santagostini, Timothée; Le Boulluec, Marc; Magaldi, Philippe; Scolan, Yves-marie. One type of low head hydropower plant is studied. This solution, based on a bathtub vortex, is called the gravitational vortex hydropower. It consists on a turbine placed at the center of the vortex which allows to harvest the kinetic energy [1]. As a first step, the bathtub vortex is studied without the turbine, in the supercritical flow regime. A numerical model has been performed using OpenFOAM 2.2.2. A two phases approach, using the volume of fluid method has been chosen. Simulations are mostly done without any modelling of turbulent phenomena (laminar model). In order to validate the numerical approach, an experimental campaign is carried out. The experimental data are compared qualitatively and quantitatively to the values extracted from the... Tipo: Text Ano: 2016 URL: http://archimer.ifremer.fr/doc/00392/50354/51053.pdf Modélisation expérimentale et numérique d'un tourbillon de vidange avec injection en régime super-critique ArchiMer Fourestier, Gaspard; Santagostini, Timothee; Le Boulluec, Marc; Magaldi, Philippe; Scolan, Yves-marie. One type of low head hydropower plant is studied. This solution, based on a bathtub vortex, is called the gravitational vortex hydropower. It consists in a turbine placed at the center of the vortex which harvests the vortex kinetic energy. As a first step, the bathtub vortex is studied without the turbine, in the supercritical flow regime. An experimental campaign is carried out to study this bathtub vortex. Water heights are measured using acoustic sensors in seven points in the tank. A laser Doppler velocimetry device is deployed to measure the velocities in three planes in the water flow. Simulations are performed using OpenFOAM 2.2.2 with a two phase approach using the volume of fluid method (solver interFoam). First simulations are performed without... Tipo: Text Palavras-chave: Tourbillon de vidange; InterFoam; Vélocimétrie laser; Bathtub vortex; InterFoam; Laser Doppler velocimetry. Ano: 2017 URL: https://archimer.ifremer.fr/doc/00410/52190/55231.pdf Registros recuperados: 4 Primeira ... 1 ... Última

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