Incipient Hydraulic Jump at Channel Junctions
Publication: Journal of Hydraulic Engineering
Volume 119, Issue 3
Abstract
The conditions for hydraulic jump formation at the confluence to a supercritical flow are examined theoretically. One‐dimensional analysis for rectangular channels leads to approximate criteria for the channels discharge ratio in terms of the junction geometry and approaching flow conditions. The effect of the main factors, notably the Froude numbers and channels' width ratio, is determined. Experiments are carried out for junctions at a 90° and a 17° angle of a subcritical tributary flow to a weakly supercritical main flow with . The results of this study and other available experimental results covering a wider range of Froude numbers compare favorably to the theoretical predictions. The behavior of the water level at the end of the lateral channel is also presented in nondimensional diagrams.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 119 • Issue 3 • March 1993
Pages: 409 - 423
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Oct 2, 1992
Published online: Mar 1, 1993
Published in print: Mar 1993
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