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Estimating the uncertainty of discharge coefficient predicted for oblique side weir using Monte Carlo method

Abstract

Side weir is a hydraulic structure, which is used in irrigation systems to divert some water from main to side channel. It is installed at the entrance of the side channel to control and measure passing water into the side channel. Many studies provided side weir water surface profile and coefficient of discharge to measure water discharge diverted into the side channel. These studies dealt with different side weir shapes (rectangular, trapezoidal, triangular and circular), which were installed perpendicular to the flow direction. Recently, some studies dealt with skew side weir, but these studies still need to more investigation. Here we report to investigate oblique side weir theoretically using statistical method to supported other studies in this case. Measurement uncertainty discharge coefficient Cd was obtained by two methods: analytical according to the 'Guide to the expression of uncertainty in measurement' and the Monte Carlo method. The results indicate that all experimental results are consistent with the analytical results. The relative expanded uncertainty of the discharge coefficient Cd does not exceed 2%.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
FLOW MEASUREMENT AND INSTRUMENTATION no. 73,
ISSN: 0955-5986
Language:
English
Publication year:
2020
Bibliographic description:
Mohammed A., Golijanek-Jędrzejczyk A.: Estimating the uncertainty of discharge coefficient predicted for oblique side weir using Monte Carlo method// FLOW MEASUREMENT AND INSTRUMENTATION -Vol. 73, (2020), s.101727-
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.flowmeasinst.2020.101727
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