TECHNICAL NOTES
Sep 1, 1991
Correction to Parshall Flume Calibrations at Low Discharges
Publication: Journal of Irrigation and Drainage Engineering
Volume 117, Issue 5
Abstract
An inspection of the original study that developed the rating equations for Parshall flumes indicates that the calibration tests were not conducted for as low of flows as currently recommended for their use. An experimental investigation for one flume size indicates that the rating equations significantly overpredict discharge at low flow rates. The discrepancy can be as much as 25% for the range of flows recommended. An alternate rating equation is developed for use with these low flow rates.
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References
1.
Chow, V. T. (1959). Open channel hydraulics. McGraw Hill Book Co., New York, N.Y.
2.
Keller, R. J. (1984). “Cut‐throat flume characteristics.” J. Hydr. Engrg., ASCE, 110(9), 1248–1263.
3.
Olson, R. E. and Wright, S. J. (1990). Essentials of engineering fluid mechanics. 5th Ed., Harper and Row, New York, N.Y.
4.
Parshall, R. L. (1926). “The improved venturi flume.” Trans., ASCE, 89, 841–851.
Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 117 • Issue 5 • September 1991
Pages: 800 - 804
Copyright
Copyright © 1991 ASCE.
History
Published online: Sep 1, 1991
Published in print: Sep 1991
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Authors
Affiliations
Steven J. Wright, Member, ASCE
Assoc. Prof. of Civ. Engrg., 113 Engrg. 1A, Univ. of Michigan, Ann Arbor, MI, 48109‐2125
Bahram Taheri
Ph.D. Student, Civ. Engrg. Dept., Univ. of Michigan, Ann Arbor, MI
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.