[article] 
inJournal of hydraulic research > Vol. 49 N° 3 (Mai/Juin 2011) . - pp. 359-366

Titre :	Experimental observation of flow characteristics over a Piano Key Weir
Type de document :	texte imprimé
Auteurs :	Olivier Machiels, Auteur ; Sebastien Erpicum, Auteur ; Benjamin J. Dewals, Auteur
Année de publication :	2011
Article en page(s) :	pp. 359-366
Note générale :	Hydraulique
Langues :	Anglais (eng)
Mots-clés :	Free surface flow Physical model Piano Key Weir Pressure distribution Streamline Velocity
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
Résumé :	The Piano Key Weir is a type of labyrinth weir using overhangs to reduce the footprint of the foundation. These are directly placed on a dam crest. Together with its high discharge capacity for low heads, this geometry makes these weirs interesting in dam rehabilitation. However, the Piano Key Weir is a new weir type, first designed in 2001 and built from 2006 by Electricité de France. Even though experimental studies confirmed its appealing discharge capacities, the flow upstream, over and downstream of this complex structure is still not well known. This research presents experimental test results performed on a 1:10 scale model. The experiments aim at determining the flow features along the weir depending on the upstream head. The flow conditions are characterized in terms of specific discharge, velocity, pressure, water level and streamlines along the weir.
DEWEY :	627
ISSN :	0022-1686
En ligne :	http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.567761

[article] Experimental observation of flow characteristics over a Piano Key Weir [texte imprimé] / Olivier Machiels, Auteur ; Sebastien Erpicum, Auteur ; Benjamin J. Dewals, Auteur . - 2011 . - pp. 359-366.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 49 N° 3 (Mai/Juin 2011) . - pp. 359-366

Mots-clés :	Free surface flow Physical model Piano Key Weir Pressure distribution Streamline Velocity
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
Résumé :	The Piano Key Weir is a type of labyrinth weir using overhangs to reduce the footprint of the foundation. These are directly placed on a dam crest. Together with its high discharge capacity for low heads, this geometry makes these weirs interesting in dam rehabilitation. However, the Piano Key Weir is a new weir type, first designed in 2001 and built from 2006 by Electricité de France. Even though experimental studies confirmed its appealing discharge capacities, the flow upstream, over and downstream of this complex structure is still not well known. This research presents experimental test results performed on a 1:10 scale model. The experiments aim at determining the flow features along the weir depending on the upstream head. The flow conditions are characterized in terms of specific discharge, velocity, pressure, water level and streamlines along the weir.
DEWEY :	627
ISSN :	0022-1686
En ligne :	http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.567761