Reference : Varying the alveoli slopes of Piano key Weirs: Interests and limitations
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/82753
Varying the alveoli slopes of Piano key Weirs: Interests and limitations
English
Machiels, Olivier mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH) >]
Erpicum, Sébastien mailto [Université de Liège - ULg > Services généraux (Faculté des sciences appliquées) > Scientifiques attachés au Doyen (Sc.appliquées) >]
Archambeau, Pierre mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH) >]
Dewals, Benjamin mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH) >]
Pirotton, Michel mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH) >]
2011
Proceedings of the 6th International conference on dam engineering
Pina, C.
Portela, E.
Gomes, J.
725-738
Yes
No
International
978-981-08-7896-2
6th International conference on dam engineering
du 15 février 2011 au 17 février 2011
LNEC
Lisboa
Portugal
[en] PKW ; Experimental ; Parametric
[en] Piano Key Weir is a cost effective solution for rehabilitation as well as for new dam project with a high level of constraints (space, flood discharge, reservoir level). Its labyrinth shape permits the evacuation of discharges till four times more important than ogee-crested weirs with the same length at the dam crest, when the use of overhangs permits the building of the auto-equilibrated structure directly on dam crest. If the efficiency of the Piano Key Weir has already been well demonstrated, the definition of its optimal geometry has been still poorly approached. In order to improve the design of the complex geometry of this structure, the study of the influence of the mean geometrical parameters on the discharge capacity is an essential stage. Following a former experimental study of the flow over Piano Key Weirs, highlighting the mean influence of three geometrical parameters, this paper presents the results of an experimental parametric study. These results highlight the influence of the alveoli bottom slopes on the Piano Key Weir release capacity. In this paper, the interests and limitations of the variation of the slopes are explained. Recommendations directly linked to the observation of the experimental models are also provided to improve the design of PKW.
Aquapôle - AQUAPOLE
Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA
Researchers ; Professionals
http://hdl.handle.net/2268/82753

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