Journal ArticleDOI
Performance and Design of Labyrinth Weirs
TLDR
In this paper, the authors describe the results of a program of research on labyrinth weirs that is aimed to provide comprehensive performance and design data, and a mathematical model was constructed and a computer program developed which will predict performance to ± 4% accuracy or better over a wide range of operating conditions.Abstract:
The purpose of the labyrinth weir is to increase the discharge per unit width of channel beyond that usually obtained from a conventional weir under identical head conditions. This is achieved by compressing a large length of crest in concertina form into the space available on site. An increase of discharge ranging up to sixfold or more can be obtained. Described are the results of a program of research on labyrinth weirs that is aimed to provide comprehensive performance and design data. The experimental work covered the effects of all primary parameters affecting performance such as crest length magnification, plan geometry, number of cycles, etc. Parallel with the experimental work a mathematical model was constructed and a computer program developed which will predict performance to ± 4% accuracy or better over a wide range of operating conditions. Finally a simple design method is instilled from the experimental and theoretical results.read more
Citations
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Inclined Rectangular Weir-Flow Modeling
M. B. Ananthayya,Gicy M. Kovoor +1 more
TL;DR: In this paper, the discharge-head-inclination model was used to measure flow over inclined Rectangular weir. But, this model is more commonly used in laboratory rather in the field channels due to its major drawback in development of afflux.
Journal ArticleDOI
Case study of a labyrinth weir spillway
TL;DR: A labyrinth weir is an effective and economical means of providing increased spillway capacity under some restricted operating conditions as mentioned in this paper, and is particularly suited to reservoir site conditions and is suitable for reservoir sites.
Journal ArticleDOI
Labyrinth Weirs with Angled Approach Flow
M. R. Dabling,Blake P. Tullis +1 more
TL;DR: In this paper, the hydraulic characteristics of labyrinth weirs when the approach flow is perpendicular to the weir axis, a condition that is not considered in this paper, have been investigated.
Journal ArticleDOI
Discharge characteristics and structure of flow in labyrinth weirs with a downstream pool
TL;DR: In this paper, a new design of a labyrinth weir was introduced by adding a square pool to the vertex of a one-cycle triangular labyrinth heir with a sidewall angle of 45°, which increased weir length without causing an excessive nappe interaction, and as a result reduced the head water over the weir with the same discharge.
Journal ArticleDOI
Investigation on labyrinth spillway multi-objective optimization with an emphasis on predicting discharge coefficient through different artificial neural networks
TL;DR: In this article, Radial Basis Function Neural Network (RBFNN), Multi-Layer Perceptron trained by Levenberg-Marquardt algorithm (MLP-LM), and hybrid MLP-Firefly-Algorithm (MI-FA) are employed to estimate the discharge coefficient (Cd) through eight predicting models.