Multislit Weir Characteristics
Publication: Journal of Irrigation and Drainage Engineering
Volume 133, Issue 2
Abstract
The slit weir has been recently shown to be effective in measuring very small discharge rates. In this study, the slit weir concept is extended to permit one to measure both very low and very high discharge rates accurately. For this purpose, the hydrodynamic concept of images is adopted to form a bank of multislit weirs in which the individual slit weirs have nearly identical flow characteristics. The discharge coefficient of multislit weirs is determined experimentally using the measured discharges and the corresponding heads causing weir flow. The relationship between the discharge coefficient and the main dimensionless parameters is investigated. It is concluded that the discharge coefficient can be represented solely as a function of the Reynolds number.
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References
Aydin, I., Ger, A. M., and Hincal, O. (2002). “Measurement of small discharges in open channels by slit weir.” J. Hydraul. Eng., 128(2), 234–237.
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Zhai, C. (2003). “Application of some hydraulic principles to flow measurement.” MASc thesis, Concordia Univ., Montreal.
Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 133 • Issue 2 • April 2007
Pages: 198 - 200
Copyright
© 2007 ASCE.
History
Received: Jul 18, 2005
Accepted: May 19, 2006
Published online: Apr 1, 2007
Published in print: Apr 2007
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