Experimental parametric study and design of Piano Key Weirs

[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 :

Issue :

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

Available on ORBi :

since 23 May 2014

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Bibliography

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