Flow Measurement with Rectangular Free Overfall
Publication: Journal of Irrigation and Drainage Engineering
Volume 118, Issue 6
Abstract
Previous experimental works provide different values of the ratio between the end depth and the critical depth. Differences depend on the crosssection shape of the channel, the roughness of the channel, and the characteristics of the nappe (confined or free on the sides). In this paper, the characteristics of a free overfall in a rectangular channel, having different values of the width, are experimentally studied. The measurements show that for practical application, the relationship between the end depth and the critical depth is independent of channel width. For any rectangular channel of given width, a relationship to estimate the discharge by using the depth measured at the end section is proposed.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 118 • Issue 6 • November 1992
Pages: 956 - 964
Copyright
Copyright © 1992 ASCE.
History
Published online: Nov 1, 1992
Published in print: Nov 1992
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