Hydraulic Design and Analysis of Labyrinth Weirs. I: Discharge Relationships
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Volume 139, Issue 5
Abstract
A method is presented for the hydraulic design and analysis of labyrinth weirs based upon the experimental results of physical modeling. Discharge coefficient data for labyrinth weirs with quarter-round and half-round crest shapes are presented for sidewall angles ranging from 6 to 35°. Cycle efficiency is also introduced as a design aid, which compares the hydraulic performance of different cycle geometries. Geometric parameters that affect flow performance are discussed. The predictive accuracy of the design method is evaluated through comparisons to previously published labyrinth weir head-discharge data. The companion paper examines nappe behaviors that affect flow performance and presents hydraulic design considerations specific to nappe characteristics.
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Acknowledgments
This study was funded by the State of Utah and the Utah Water Research Laboratory at Utah State University.
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Information & Authors
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Published In
Journal of Irrigation and Drainage Engineering
Volume 139 • Issue 5 • May 2013
Pages: 363 - 370
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jul 6, 2011
Accepted: Oct 25, 2012
Published online: Oct 29, 2012
Published in print: May 1, 2013
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