Results 1 to 10 of about 283 (159)

LXGB: a machine learning algorithm for estimating the discharge coefficient of pseudo-cosine labyrinth weir [PDF]

Scientific Reports, 2023
One of the practical and financial solutions to increase the efficiency of weirs is to modify the geometry of the plan and increase the length of the weir to a specific width. This increases the discharge coefficient (C d ) of the weir.
Somayeh Emami, Hojjat Emami, Javad Parsa
doaj   +2 more sources

Experimental Study of Rectangular Labyrinth Weir

مجله آب و خاک, 2016
Introduction: Labyrinth weirs compare with straight weirs had required less freeboard in upstream so they are more appropriate for the irrigation networks.
M. Rezaee, A. Emadi, Q. Aqajani Mazandarani   +2 more
doaj   +2 more sources

The energy dissipation of flow over the labyrinth weirs

Alexandria Engineering Journal, 2022
In this study, the energy dissipation of flow over the triangular and trapezoidal labyrinth weirs with one and two key cycles was investigated. The magnification ratios (MR) of models were 1.57, 2.57, 3.57, and 4.57.
Amir Hamzeh Haghiabi, Mohammad Rashki Ghaleh Nou, Abbas Parsaie   +2 more
doaj   +2 more sources

Analysis of discharge characteristics of a symmetrical stepped labyrinth side weir based on global sensitivity

Journal of Hydroinformatics
In this paper, the discharge coefficient prediction model for this structure in a subcritical flow regime is first established by extreme learning machine (ELM) and Bayesian network, and the model's performance is analyzed and verified in detail.
Wan Wuyi, Parsaie Abbas
exaly   +3 more sources

Experimental Study of Discharge Coefficient of Combination Labyrinth Weirs [PDF]

Journal of Hydraulic Structures, 2022
Labyrinth weirs are one of the kind of nonlinear crest weirs causing the increase of discharge capacity for specified height of water level in canals and dams.
Mojtaba Kheilapoor, Javad Mozaffari, Seyed Asadolah Mohseni Movahed   +2 more
doaj   +1 more source

Labyrinth Weirs

Journal of Hydraulic Engineering, 2010
Labyrinth weirs are often a favorable design option to regulate upstream water elevations and increase flow capacity; nevertheless, it can be difficult to engineer an optimal design due to the complex flow characteristics and the many geometric design variables of labyrinth weirs.
Crookston, B M, Tullis, Blake P.
  +7 more sources

Investigating a new approach to enhance the discharge capacity of labyrinth weirs

Journal of Hydroinformatics, 2023
Climate change has caused the inefficient operation of a significant number of old weirs to pass large discharges. Therefore, this study aims to increase the discharge capacity of the labyrinth weir.
Anees Kadhum Idrees, Riyadh Al-Ameri
doaj   +1 more source

The effect of the energy head and the inlet and outlet key width on discharge coefficient of Piano key weir [PDF]

فناوری‌های پیشرفته در بهره‌وری آب, 2023
IntroductionPiano key weir is a form of nonlinear weir designed to improve the discharge capacity of spillway structures. Due to the increase in effective length, they can be used in dam spillways or water regulation structures.
Shima Komeili, Mohammad Mehdi Heidari
doaj   +1 more source

A Study on the Labyrinth Weir for Improvement of Reaeration [PDF]

Journal of Korea Water Resources Association, 2002
Dae-Young Yu, Sung-Tae Kim, Hyo-seop Woo
exaly   +2 more sources

Experimental and Numerical Study of the Discharge Coefficient in Parabolic Labyrinth Weirs [PDF]

محیط زیست و مهندسی آب, 2021
An increase in the hydraulic capacity of flow conveyance over a weir per a given stage of a stream upstream of the weir is feasible by extending the effective length of the crest of the weir per unit width of flow section. In this work, in order to study
Nader Banitamim, Mohammad Heidarnejad
doaj   +1 more source