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Arabian Journal for Science and Engineering
Erschienen in: Arabian Journal for Science and Engineering 4/2022

16.01.2022 | Review Article--Civil Engineering

Hydraulic Design and Analysis of Piano Key Weirs: A Review

verfasst von: Deepak Singh, Munendra Kumar

Erschienen in: Arabian Journal for Science and Engineering | Ausgabe 4/2022

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Abstract

Dams are multipurpose structures that provide water for drinking purposes, hydroelectric power generation, navigation, industrial uses, and irrigation, in addition to flood control. The loss of storage due to siltation or submergence can be remedied by constructing an ungated spillway or weir over the dam structure. Many researchers have studied different shapes of the weir to reduce the submergence problem; some used the modified shape of the weir named Labyrinth weir in their studies, which gives the concept of a new shape of the nonlinear Piano Key Weir (PKWs). The PKW is a cost-effective solution for rehabilitation and new dam projects with a high level of constraints, for instance, limited space, small reservoir level, high specific flood discharge, etc. This paper reviews the previous studies on the historical development of the PKW, the geometry and structural integrity, the methodologies developed by researchers, and the stability of flow hydrodynamics at the PKW. The purpose of this study is to summarize the available information to date about PKW hydraulics and compare it to other alternative rectilinear or nonlinear weirs from the literature in terms of discharge capabilities, sediment transportation efficiency, aeration performance, and economic aspects. The comparison shows that the PKW is an excellent alternative for dam risk mitigation due to its high spillway capabilities, aeration performance, and economic point of view with other alternatives. Furthermore, in addition to field applicability, this study identifies future research possibilities that merit further investigation.
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Metadaten
Titel
Hydraulic Design and Analysis of Piano Key Weirs: A Review
verfasst von
Deepak Singh
Munendra Kumar
Publikationsdatum
16.01.2022
Verlag
Springer Berlin Heidelberg
Erschienen in
Arabian Journal for Science and Engineering / Ausgabe 4/2022
Print ISSN: 2193-567X
Elektronische ISSN: 2191-4281
DOI
https://doi.org/10.1007/s13369-021-06370-4

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