https://doi.org/10.4081/jae.2019.928
Deducing the stage-discharge relationship for contracted weirs by the outflow theory of Malcherek
HTML: 201
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
Authors
The aim of this paper was the deduction of a new stage-discharge relationship for a contracted weir, having a crest length less than the channel width, by using the Malcherek’s outflow theory. The average outflow velocity over the rectangular contracted weir was expressed in terms of the head over weir, the momentum correction coefficient and the ratio between the crest length and the channel width. This theoretically deduced stage-discharge formula was calibrated by measurements carried out for values of the ratio between the crest length and the channel width ranging from 0.3125 to 0.9375. In particular, a relationship to estimate the momentum correction coefficient for contracted weirs was deduced. The analysis showed that the proposed stage-discharge relationship is characterised by an excellent performance and allows to measure discharge values characterised by errors which are, for 96.0% of the measured values, less than or equal to ±5%.
How to Cite
PAGEPress has chosen to apply the Creative Commons Attribution NonCommercial 4.0 International License (CC BY-NC 4.0) to all manuscripts to be published.
Similar Articles
- Alessia Tonon, Lorenzo Picco, Diego Ravazzolo, Mario Aristide Lenzi, Using a terrestrial laser scanner to detect wood characteristics in gravel-bed rivers , Journal of Agricultural Engineering: Vol. 45 No. 4 (2014)
- Mohammad Bijankhan, Ali Teymourkhani, Vito Ferro, Portable central baffle flume , Journal of Agricultural Engineering: Vol. 53 No. 2 (2022)
- Vincenzo Bagarello, Vito Ferro, Dennis Flanagan, Predicting plot soil loss by empirical and process-oriented approaches. A review , Journal of Agricultural Engineering: Vol. 49 No. 1 (2018)
- Ameneh Sobhani, Shawkat B.M. Hassan, Giovanna Dragonetti, Raffaella Balestrini, Mauro Centritto, Antonio Coppola, Alessandro Comegna, Comparing actual transpiration fluxes as measured at leaf-scale and calculated by a physically based agro-hydrological model , Journal of Agricultural Engineering: Vol. 54 No. 3 (2023)
- Sergio Castellano, Giuseppe Starace, Lorenzo De Pascalis, Marco Lippolis, Giacomo Scarascia-Mugnozza, Experimental results on air permeability of agricultural nets , Journal of Agricultural Engineering: Vol. 47 No. 3 (2016)
- Hossein Khaledian, Homayoun Faghih, Ata Amini, Classifications of runoff and sediment data to improve the rating curve method , Journal of Agricultural Engineering: Vol. 48 No. 3 (2017)
- Andrea Dell'Agnese, Bruno Mazzorana, Francesco Comiti, Patricia Von Maravic, Vincenzo D'agostino, Assessing the physical vulnerability of check dams through an empirical damage index , Journal of Agricultural Engineering: Vol. 44 No. 1 (2013)
- Andrea Galli, Cosimo Peruzzi, Fabiola Gangi, Daniele Masseroni, ArduHydro: a low-cost device for water level measurement and monitoring , Journal of Agricultural Engineering: Vol. 55 No. 1 (2024)
- Francesco Giuseppe Carollo, Vito Ferro, Vincenzo Pampalone, Sequent depth ratio of B-jumps on smooth and rough beds , Journal of Agricultural Engineering: Vol. 44 No. 2 (2013)
- Mario Pirastru, Marcello Niedda, Mirko Castellini, Effects of maquis clearing on the properties of the soil and on the near-surface hydrological processes in a semi-arid Mediterranean environment , Journal of Agricultural Engineering: Vol. 45 No. 4 (2014)
<< < 1 2 3 4 5 6 7 8 9 10 > >>
You may also start an advanced similarity search for this article.
