[HTML][HTML] Discharge estimation over piano key weirs: A review of recent developments

RK Bhukya, M Pandey, M Valyrakis, P Michalis - Water, 2022 - mdpi.com
The piano key (PK) weir has advanced over the labyrinth weir to increase the discharge
capacity. Piano key weirs exhibit nonlinear flow behavior and are easy to place on the …

Hydraulic design and analysis of labyrinth weirs. I: Discharge relationships

BM Crookston, BP Tullis - Journal of Irrigation and Drainage …, 2013 - ascelibrary.org
A method is presented for the hydraulic design and analysis of labyrinth weirs based upon
the experimental results of physical modeling. Discharge coefficient data for labyrinth weirs …

Efficient method using Whale Optimization Algorithm for reliability-based design optimization of labyrinth spillway

J Jafari-Asl, MEAB Seghier, S Ohadi… - Applied Soft Computing, 2021 - Elsevier
Spillways are essential parts of dams, in which the main task of these structures is to allow
the passing of excess water and floods from the upstream to the downstream. In this regards …

Experimental and CFD analysis of circular labyrinth weirs

O Bilhan, MC Aydin, ME Emiroglu… - Journal of Irrigation and …, 2018 - ascelibrary.org
Labyrinth weirs present an effective solution for high discharge efficiency in space-restrictive
situations. However, these weirs exhibit negative effects (vibrations, noise, and instability) …

A review of hydraulic performance and design methods of labyrinth weirs

AK Idrees, R Al-Ameri - Water Supply, 2022 - iwaponline.com
Labyrinth weirs are complex hydraulic structures. They have been widely used as a water
regulator and to increase discharge in channels and spillway dams. Labyrinth weirs are an …

Numerical investigation of flow characteristics and energy dissipation over piano key and trapezoidal labyrinth weirs under free-flow conditions

T Selim, AK Hamed, M Elkiki, MG Eltarabily - Modeling Earth Systems and …, 2024 - Springer
Piano Key (PK) and trapezoidal labyrinth (TL) weirs are nonlinear control structures suitable
for narrow channels with high discharge by expanding the crest length of the overflow. In …

Determining discharge coefficient of labyrinth and arced labyrinth weirs using support vector machine

K Roushangar, MT Alami, J Shiri, MM Asl - Hydrology research, 2018 - iwaponline.com
A labyrinth weir is a linear weir folded in plan-view which increases the crest length and the
flow rate for a given channel width and an upstream flow depth. The present study aimed at …

Optimal design of labyrinth spillways using meta-heuristic algorithms

K Hosseini, EJ Nodoushan, R Barati… - KSCE Journal of Civil …, 2016 - Springer
The labyrinth spillway continues to be a popular type of the control structures. The focus of
the present study is that on the optimization of the shape of the labyrinth spillway through the …

Hydraulic design and analysis of labyrinth weirs. II: Nappe aeration, instability, and vibration

BM Crookston, BP Tullis - Journal of irrigation and drainage …, 2013 - ascelibrary.org
Nappe behavior should be considered in the design of labyrinth weirs to ensure hydraulic
optimization and to account for potential vibrations, pressure fluctuations, noise, and flow …

Energy dissipation of flow over the type-B Piano Key Weir

D Singh, M Kumar - Flow Measurement and Instrumentation, 2022 - Elsevier
Abstract Piano Key Weir (PKW) is an evolution with an efficient implementation over
conventional labyrinth weir, especially at low heads. It is used as the crest of spillways and …