Flow over thin-plate weirs with a triangular notch – influence of the relative width of approach channel with a rectangular cross-section
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Date
2024-06-01
Authors
Pospíšilík, Šimon
Zachoval, Zbyněk
Gabriel, Pavel
0000-0001-5636-3634Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Hydrology of the Slovak Academy of Sciences
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Abstract
The article deals with the determination of the influence of the relative width of an approach channel with a rectangular cross-section on the discharge of clean water flowing over thin-plated weirs with a triangular notch and zero height of the weir above the bottom of the approach channel. To evaluate the influence, the Kindsvater-Shen equation was modified by introducing the basic effective discharge coefficient and the coefficient of the relative width of the approach channel. The coefficient of the relative width of the approach channel was determined based on the evaluation of data from three extensive experimental research investigations. It is valid for the entire possible range of relative widths of the approach channel and for the range of notch angles from 5.25° to 91.17°. The relative error of discharge determination is approximately up to ±2% over the entire range of discharges used in the conducted experimental research. The evaluation made it possible to determine the boundary distinguishing the partially contracted weirs from the fully contracted weirs in terms of impact on discharge.
Description
Citation
Journal of Hydrology and Hydromechanics. 2024, vol. 72, issue 2, p. 199-206.
https://sciendo.com/article/10.2478/johh-2024-0008
https://sciendo.com/article/10.2478/johh-2024-0008
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en
Study field
Comittee
Date of acceptance
Defence
Result of defence
Document licence
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
http://creativecommons.org/licenses/by-nc-nd/4.0/