Control structure; Discharge capacity; Hydraulic models; Hydraulic structure; Spillway
Abstract :
[en] Piano Key Weirs are an effective solution for dam rehabilitation as well as new dam projects with a high level of hydraulic constraints. In order
to improve the efficiency of their design, an experimental study of the influence of the main geometric parameters has been performed. Thirty one
configurations were tested for a wide range of discharges. The results of the study show the influence of the weir height, the keys widths and the
overhangs lengths on the discharge capacity and flow characteristics. Based on hydraulic considerations, optimum values of the main geometric ratios
are provided. An analytical formulation is developed to predict the discharge capacity of the weir as a function of its geometry. It shows an accuracy
of 10% compared to the experimental results of this study and from other sources.
Research Center/Unit :
Aquapôle - ULiège
Disciplines :
Civil engineering
Author, co-author :
Machiels, Olivier
Pirotton, Michel ; Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Archambeau, Pierre ; Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Dewals, Benjamin ; Université de Liège - ULiège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Erpicum, Sébastien ; Université de Liège - ULiège > Scientifiques attachés au Doyen (Sc.appliquées)
Language :
English
Title :
Experimental parametric study and design of Piano Key Weirs
Alternative titles :
[fr] Etude paramétrique expérimentale et dimensionnement des déversoirs en touches de piano
Publication date :
2014
Journal title :
Journal of Hydraulic Research
ISSN :
0022-1686
eISSN :
1814-2079
Publisher :
International Association for Hydraulic Research, Delft, Netherlands
Volume :
52
Issue :
3
Pages :
326-335
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture
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