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Chapitre D'ouvrage Année : 1999

Some aspects of wind-wave coupling at high winds

Résumé

Experiments were conducted in the IRPHE wind-wave facility in order to study the evidence and occurrence of air-flow separation above short wind waves. An original air-flow separation probe was designed and a Particle Image Velocimetry (PIV) technique in the air close to the surface was carried on. Measurements above steep waves clearly show air-flow separation at the crest, organised vortex motions with reverse flow above the leeward face and reattachment on the windward face of the downstream wave. Occurrence of air-flow separation grows linearly with wave steepness and decreases with wave age. The associated effects on wind-wave coupling are investigated.
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hal-00192505 , version 1 (17-05-2023)

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  • HAL Id : hal-00192505 , version 1

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Jean-Paul Giovanangeli, Nicolas Reul, Marie Helene Garat, Hubert Branger. Some aspects of wind-wave coupling at high winds. S. G. Sajjadi; N. H. Thomas; J. C. R. Hunt. Wind-over-Wave couplings. Perspectives and Prospects, 69, Clarendon Press; Oxford University Press, pp.81-90, 1999, Institute of Mathematics and its Applications Conference Series, 9780198501923. ⟨hal-00192505⟩
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