Results 41 to 50 of about 214 (177)

Experimental and Simulation Studies on Water Discharge Coefficients of Rectangular Piano Key Weirs

International Journal of Technology, 2022
The piano key weir (PKW) is a developed type of labyrinth spillway with the ability to transfer large amounts of discharge by keeping executive costs constant.
Vafa Rezaei, Seyed Habib Musavi-Jahromi, Amir Khosrowjerdi, Babak Beheshti   +3 more
doaj   +1 more source

Integrating Satellite Data Into Meso‐Scale Habitat Modeling for Non‐Perennial Rivers and Streams

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Non‐perennial rivers and streams (NPRs) are widespread and projected to become more common, yet effective tools for their characterization and management remain limited. This study introduces a novel approach to assess aquatic habitat availability in NPRs, applied to a regulated reach of the Sangone River (Northern Italy).
G. Negro, B. Pinna, G. Manfreda, P. Lo Conte, E. Belcore, P. Maschio, C. Cavallo, M. N. Papa, P. Vezza   +8 more
wiley   +1 more source

Analysis of Piano Key Weir Drainage Characteristics

, 2023
AbstractThe piano key weir is a new type of labyrinth weir structure form, its advantages such as stable structure, upstream and downstream inverted overhang and small base area greatly improve the scope of application, and it has high discharge capacity and overflow efficiency, which is considered as a very effective method to solve the shortage of ...
Zixiang Li, Jiayi Xu, Yanfu Li, Changhai Han   +3 more
openaire   +1 more source

Effects of Short‐Term Climate Variations on Young Water Fraction in a Small Pre‐Alpine Catchment

Water Resources Research, Volume 60, Issue 10, October 2024.
Abstract Continuous and extended observations of hydrometeorological parameters, alongside the analysis of the isotopic composition across diverse waters within catchments, can significantly enhance our understanding of the potential ramifications of climate change on the hydrological response.
C. Xia, G. Zuecco, C. Marchina, D. Penna, M. Borga   +4 more
wiley   +1 more source

Population Genomics of the Blue Shark, Prionace glauca, Reveals Different Populations in the Mediterranean Sea and the Northeast Atlantic

Evolutionary Applications, Volume 17, Issue 9, September 2024.
ABSTRACT Populations of marine top predators have been sharply declining during the past decades, and one‐third of chondrichthyans are currently threatened with extinction. Sustainable management measures and conservation plans of large pelagic sharks require knowledge on population genetic differentiation and demographic connectivity. Here, we present
Agostino Leone, Sophie Arnaud‐Haond, Massimiliano Babbucci, Luca Bargelloni, Ilaria Coscia, Dimitrios Damalas, Chrystelle Delord, Rafaella Franch, Fulvio Garibaldi, David Macias, Stefano Mariani, Jann Martinsohn, Persefoni Megalofonou, Primo Micarelli, Natacha Nikolic, Paulo A. Prodöhl, Emilio Sperone, Marco Stagioni, Antonella Zanzi, Alessia Cariani, Fausto Tinti   +20 more
wiley   +1 more source

Effect of the shape and type of piano key weirs on the flow efficiency

Ain Shams Engineering Journal, 2022
This study evaluates the effect of the piano key weir’s (PKW) shape and type on the flow efficiency for different inlet and outlet keys width ratios (Wi/Wo). The study is performed experimentally and numerically using a CFD model.
Amr A. Bekheet, Nahla M. AboulAtta, Neveen Y. Saad, Doaa A. El-Molla   +3 more
doaj   +1 more source

Piano Key Weirs: the experimental study of an efficient solution for rehabilitation [PDF]

WIT Transactions on Ecology and the Environment, 2010
The Piano Key Weir (PKW) is a particular geometry of weirs associating with a labyrinth shape and the use of overhangs, which reduce the basis length. The PKW could thus be directly placed on a dam crest. Together with its important discharge capacity for low heads (up to four times that of a Creager weir), this geometric feature makes the PKW an ...
Machiels, Olivier, Erpicum, Sébastien, Archambeau, Pierre, Dewals, Benjamin, Pirotton, Michel   +4 more
openaire   +2 more sources

Comparison of Hydraulic Performance of Linear and Nonlinear Piano-Key Weirs in Plan

علوم آب و خاک, 2019
In this research, by using FLOW3D, the performance of non-linear (arced) piano key (PKW-NL) in plan and linear piano key weir (PKW-L), with equal length of weir, was compared.
A. Rezaei Ahvanooei, H. Karami, F. Mousavi   +2 more
doaj  

Computation of energy across the type-C piano key weir using gene expression programming and extreme gradient boosting (XGBoost) algorithm

Energy Reports, 2023
An accurate assessment of energy loss across dams and weir systems is a critical technical and monetary remedy for understanding the hydraulic system’s downstream morphology during the flood.
Nipun Bansal, Deepak Singh, Munendra Kumar   +2 more
doaj   +1 more source

Non-cohesive sediment cleaning patterns and processes upstream of a Type A piano key weir for steady and unsteady flow conditions

Journal of Hydrology and Hydromechanics
The piano key weir has been used in channel and spillway rehabilitation projects due to their compact footprint, hydraulic efficiency and cost-effectiveness.
Panthi Manisha, Crookston Brian M.
doaj   +1 more source