Unsteady calibration of a large V-notch weir

Chanson, Hubert (2012): Unsteady calibration of a large V-notch weir. The University of Queensland. Dataset. doi:10.14264/uql.2016.585

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Project name Unsteady calibration of a large V-notch weir
Project description
Thin-plate weirs are commonly used as measuring devices in flumes and channels, enabling an accurate discharge measurement with simple instruments. The calibration formulae of such devices rely upon some empirical coefficients and there is a need to obtain new accurate physical data to complement the existing evidence. In the present study, the discharge calibration of a large 90º V-notch thin plate weir was performed using an unsteady volume per time technique. The V-notch weir was initially closed by a fast-opening gate. The sudden opening induced an initial phase of the water motion dominated by the free-falling motion of a volume of fluid in the vicinity of the weir, followed by a gradually-varied phase, during which some seiche was observed in the tank. The relationship between water discharge and upstream water elevation was derived from the integral form of the continuity equation. The results yielded a dimensionless discharge coefficient Cd = 0.58 close to previous experiments for 90º V-notch weirs. The findings showed that the unsteady discharge calibration of the V-notch weir yielded similar results to a more traditional calibration approach based upon steady flow experiments, allowing a rapid testing over a broad range of flow rates.
Contact name Chanson, Hubert
Contact email h.chanson@uq.edu.au
Creator name Chanson, Hubert
Creator(s) role Chief Investigator
Dataset name Unsteady calibration of a large V-notch weir
Dataset description
The data collection includes the raw data files, some analysed data files, original photographs, to complement the publications and movies already uploaded at UQ's institutional repository - Unsteady Discharge Calibration of a Large V-Notch Weir (report and publication).
Access conditions Mediated Access
Licencing and terms of access Creative Commons Attribution noncommercial

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ANZSRC Field of Research (FoR) Code 09 Engineering
0905 Civil Engineering
090509 Water Resources Engineering
DOI 10.14264/uql.2016.585
Grant ID DPDP0878922 & DP120100481
Type of data Data file
Data Volume 65 Mb
Software required DPlot
JPEG viewer
Language eng
Collection start date 2012-07-01
Time coverage start date 2012-06-01
Keyword 90-degree V-notch weir
Unsteady experiments
Calibration curves
Discharge measurement
ANZSRC Socio-Economic Objective (SEO) Code D Environment
96 Environment
9605 Ecosystem Assessment and Management
9609 Land and Water Management
9699 Other Environment
E Expanding Knowledge
970109 Expanding Knowledge in Engineering
B Economic Development
Collection type Dataset
Publisher The University of Queensland
Publication Year 2012
Copyright notice 2012, The University of Queensland
Additional Notes Data set with mediated access.

Document type: Data Collection
Collections: School of Civil Engineering Publications
Research Data Collections
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Created: Mon, 27 Oct 2014, 22:59:06 EST by Hubert Chanson