Overfall in U-Shaped Channels
Publication: Journal of Engineering Mechanics
Volume 129, Issue 3
Abstract
Free overfall in U-shaped channels is theoretically analyzed, applying a momentum equation based on the Boussinesq approximation, to obtain the equation of end depth. The end-depth ratio is 0.75 up to normalized critical depth 0.50; and then it decreases gradually with an increase in normalized critical depth. A method to estimate discharge from the end depth is presented. The upstream flow profile of a free overfall is computed using the streamline curvature at the free surface. Experiments were conducted in two U-shaped channels to verify the model. The results obtained using the model agree satisfactorily with the experimental data.
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Information
Published In
Journal of Engineering Mechanics
Volume 129 • Issue 3 • March 2003
Pages: 358 - 362
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Mar 25, 2002
Accepted: Aug 1, 2002
Published online: Feb 14, 2003
Published in print: Mar 2003
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