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Interaction houle-courant en bathymétrie variable via une approche de type boussinesq ArchiMer
Guinot, Florent; Le Boulluec, Marc; Rey, Vincent.
Modeling wave-current interaction needs a method combining accurate kinematics and reasonable computing efforts. Refined waves kinematics are described by a Boussinesq-type approach allowing a variable bathymetry. This method is adapted to take current effects into account. Results on Doppler shift, waves blocking and velocity profile are reported in a twodimensional case.
Tipo: Text Palavras-chave: Interaction houle-courant; Approche de Boussinesq; Profil de vitesse; Wave-current interaction; Boussinesq approach; Velocity profile.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/00170/28172/26406.pdf
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Interaction houle-courant par profondeur finie : impact sur la cinématqiue ArchiMer
Rey, Vincent; Guinot, Florent; Le Boulluec, Marc.
The aim of this large scale basin experiment on wave current interactions was a better understanding of vertical velocity profiles changes due to progressive surface waves. The instrumentation deployed including wave gauges, pressure sensors and current meters allowed precise measurements along the basin. In particular, the effect of waves on the homogenization of vertical profile was measured, and the effect of current on the underestimate of wave height from bottom mounted pressure sensors was demonstrated. However, the current flow without wave was bi-dimensional and weakly sheared, and no study on the current instability as observed in previous experiment could be achieved.
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Ano: 2007 URL: http://archimer.ifremer.fr/doc/00170/28171/26405.pdf
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Modélisation hydro-sédimentaire de la rade de Toulon : application à l’étude de la dispersion de radionucléides ArchiMer
Dufresne, Christiane; Duffa, Céline; Rey, Vincent; Verney, Romaric.
L’objectif de ce travail est mettre en place un modèle hydro-sédimentaire de dispersion des radionucléides, comme outil d’aide à la décision suite à une hypothétique contamination marine accidentelle. Appliqué à la Rade de Toulon, il utilise le modèle MARS-3D pour l’étude hydrodynamique et le module MIXSED pour la dynamique des différentes classes de sédiments. Les cas d’application présentés concernent le césium et le plutonium, qui ont des affinités très différentes avec les sédiments fins. Les simulations de rejet, effectuées en fond de baie, montrent une variabilité saisonnière marquée, due aux conditions météorologiques typiques, mais aussi aux conditions de débit et de charge sédimentaire associée du fleuve Las, qui se jette dans la Rade. Ainsi, les...
Tipo: Text Palavras-chave: Modélisation hydro-sédimentaire; Dispersion; Radionucléides; Toulon.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00348/45926/45619.pdf
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