Air-Flow separation above unsteady breaking waves - Ecole Centrale de Marseille Accéder directement au contenu
Article Dans Une Revue Physics of Fluids Année : 1999

Air-Flow separation above unsteady breaking waves

Résumé

The evolution of the airflow instantaneous structure over an unsteady breaking wave propagating in a group is measured in detail using the digital particle image velocimetry technique. It is found that the boundary-layer over a breaking wave, the steepest in the group, separates at a point close to the sharp crest and reattaches in the front slope of the following wave. During breaking, the evolution of the turbulent vorticity is essentially unsteady and the recirculation zone of the separated flow takes the form of a large well-organized vortex. Links between the wave-crest geometry and geometrical features of the separation bubble have been established.
Fichier principal
Vignette du fichier
Reul Branger air flow separation PhysFluids_11_1999.pdf (779.43 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-00192471 , version 1 (26-04-2023)

Identifiants

Citer

Nicolas Reul, Hubert Branger, Jean-Paul Giovanangeli. Air-Flow separation above unsteady breaking waves. Physics of Fluids, 1999, 11 (7), pp.1959-1961. ⟨10.1063/1.870058⟩. ⟨hal-00192471⟩
59 Consultations
33 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More