Marc Rabaud
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View article: Flying shape and aerodynamics of a full-scale flexible Olympic windsurf sail
Flying shape and aerodynamics of a full-scale flexible Olympic windsurf sail Open
The 3D flying shape of a real-scale 8 square meters iQFOiL class windsurf sail is measured in steady state sailing configurations. The sea wind flow conditions are simulated in a large-scale wind tunnel and stereo camera imaging technique …
Wind-wave growth over a viscous liquid Open
Experimental and theoretical studies on wind-wave generation have focused\nprimarily on the air-water interface, where viscous effects are small. Here we\ncharacterize the influence of the liquid viscosity on the growth of\nmechanically ge…
Kelvin-Helmholtz instability and formation of viscous solitons on highly viscous liquids Open
Viscous solitons are strongly non-linear surface deformations generated by\nblowing wind over a liquid beyond a critical viscosity. Their shape and\ndynamics result from a balance between wind drag, surface tension and viscous\ndissipation…
Shear instability and formation of viscous solitons on highly viscous liquids Open
Viscous solitons are strongly non-linear surface deformations generated by blowing wind over a liquid beyond a critical viscosity. Their shape and dynamics result from a balance between wind drag, surface tension and viscous dissipation in…
View article: Effect of a weak current on wind-generated waves in the wrinkle regime
Effect of a weak current on wind-generated waves in the wrinkle regime Open
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The Kelvin–Helmholtz instability, a useful model for wind-wave generation? Open
The Kelvin–Helmholtz instability, one of the most classical instabilities in fluid mechanics, was initially introduced to describe the generation of waves by wind. This instability is relevant to several natural and engineering flow config…
Speed diagram of a fast foiling sailboat Open
International audience
View article: Effect of a weak current on wind-generated waves in the wrinkle regime
Effect of a weak current on wind-generated waves in the wrinkle regime Open
We investigate numerically the influence of a weak current on wind-generated\nsurface deformations for wind velocity below the onset of regular waves. In\nthat regime, the liquid surface is populated by small disorganised deformations\nelo…
Turbulent windprint on a liquid surface Open
We investigate the effect of a light turbulent wind on a liquid surface, below the onset of wave generation. In that regime, the liquid surface is populated by small disorganised deformations elongated in the streamwise direction. Formally…
Sharp Transition in the Lift Force of a Fluid Flowing Past Nonsymmetrical Obstacles: Evidence for a Lift Crisis in the Drag Crisis Regime Open
Bluff bodies moving in a fluid experience a drag force which usually increases with velocity. However in a particular velocity range a drag crisis is observed, i.e., a sharp and strong decrease of the drag force. This counterintuitive resu…
1 Formes d’un jet liquide sortant d’un tube horizontal Open
Un jet liquide sortant d’un tube horizontal suit généralement une trajectoire parabolique avec une section à peu près circulaire. Cette forme est par exemple celle qu’on observe avec une faible courbure de la trajectoire pour un jet d’eau …