| Titre : | Experimental study of the flow field with spilling type breaking |
| Titre original : | Etude expérimentale d'un champ d'écoulement avec un déferlement déversant |
| Auteurs : | Mossa, Michele, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Journal of hydraulic research (Vol. 46 extra issue, 2008) |
| Article en page(s) : | p. 81-86 |
| Note générale : |
Hydraulique
Résumé en Français |
| Langues : | Anglais |
| Index. décimale : | 627 (Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques) |
| Tags : | Spilling breaking Turbulence Hydrofoil LDA Mixing layer Wake |
| Résumé : | This paper shows the results of an experimental work on the spilling type breaking flow field produced by a hydrofoil positioned in a uniform current. From the examination of the Laser Doppler Anemometer results downstream of the hydrofoil a flow field similar to a mixing layer, close to the breaking zone, and a flow field similar to a wake were found. The conclusions that can be drawn by the studies conducted can be summarized as follows: (i) downstream of the hydrofoil it is possible to distinguish two regions of flow, namely one immediately downstream of the hydrofoil, including spilling characterized by a mixing of water and air, and one downstream of the same spilling; (ii) in first of the aforementioned regions the flow is similar to that of a mixing layer, while, in the downstream region, it shows conditions similar to a wake; (iii) the experiments furnish information on the turbulence characteristics in the two regions, and extract the zone where the wake effect can be considered negligible; (iv) the time-averaged free surface height presents a decreasing trend from the wake origin. |
| DEWEY : | 627 |
| ISSN : | 0022-1686 |
| En ligne : | http://www.journalhydraulicresearch.com |
