Montana Flume Flow Corrections under Submerged Flow
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VIEW THE REPLYPublication: Journal of Irrigation and Drainage Engineering
Volume 138, Issue 7
Abstract
A Montana flume is a Parshall flume without a diverging downstream section and is used to measure open channel flow. Under free-flow conditions, the Parshall flume and the Montana flume have the same calibration characteristics, but under submerge flows, their calibrations significantly differ. Tests were conducted at the Utah Water Research Laboratory on an acrylic 15.2-cm (6-in.) Montana flume to determine the effects of submergence on the flow readings. This type of investigation has not been previously analyzed. It was found that a standard Parshall flume rating curve overpredicted flow rates in the submerged Montana flume, up to 48%. Parshall submergence corrections were applied to the submerged Montana flume, and flow rates were underpredicted by up to 19%. This study has developed submerged flow rate correction factors specifically for a Montana flume, and the paper also demonstrates how to apply the corrections.
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References
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Information & Authors
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Published In
Journal of Irrigation and Drainage Engineering
Volume 138 • Issue 7 • July 2012
Pages: 685 - 689
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Feb 23, 2011
Accepted: Nov 15, 2011
Published online: Jun 15, 2012
Published in print: Jul 1, 2012
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