Three-Dimensional Numerical Study of Flows in Open-Channel Junctions
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Volume 128, Issue 3
Abstract
An open-channel junction flow is encountered in many hydraulic structures ranging from wastewater treatment facilities to fish passage conveyance structures. An extensive number of experimental studies have been conducted but a comprehensive three-dimensional numerical study of junction flow characteristics has not been performed and reported. In this paper, a three-dimensional numerical model is developed to investigate the open-channel junction flow. The main objective is to present the validation of a three-dimensional numerical model with high-quality experimental data and compare additional simulations with classical one-dimensional water surface calculations. The three-dimensional model is first validated using the experimental data of a 90° junction flow under two flow conditions. Good agreement is obtained between the model simulation and the experimental measurements. The model is then applied to investigate the effect of the junction angle on the flow characteristics and a discussion of the results is presented.
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Published In
Journal of Hydraulic Engineering
Volume 128 • Issue 3 • March 2002
Pages: 268 - 280
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Feb 7, 2000
Accepted: Jun 18, 2001
Published online: Mar 1, 2002
Published in print: Mar 2002
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