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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dc.contributor.authorPospíšilík, Šimoncs
dc.contributor.authorZachoval, Zbyněkcs
dc.contributor.authorGabriel, Pavelcs
dc.coverage.issue2cs
dc.coverage.volume72cs
dc.date.issued2024-06-01cs
dc.description.abstractThe 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.en
dc.formattextcs
dc.format.extent199-206cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationJournal of Hydrology and Hydromechanics. 2024, vol. 72, issue 2, p. 199-206.en
dc.identifier.doi10.2478/johh-2024-0008cs
dc.identifier.issn1338-4333cs
dc.identifier.orcid0000-0001-5636-3634cs
dc.identifier.orcid0000-0003-0573-2107cs
dc.identifier.other188677cs
dc.identifier.researcheridS-8993-2018cs
dc.identifier.scopus55256283300cs
dc.identifier.urihttp://hdl.handle.net/11012/249345
dc.language.isoencs
dc.publisherInstitute of Hydrology of the Slovak Academy of Sciencescs
dc.relation.ispartofJournal of Hydrology and Hydromechanicscs
dc.relation.urihttps://sciendo.com/article/10.2478/johh-2024-0008cs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1338-4333/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectTriangular notch (V-notch)en
dc.subjectThin-plate weiren
dc.subjectKindsvater-Shen formulaen
dc.subjectCoefficient of the relative width.en
dc.titleFlow over thin-plate weirs with a triangular notch – influence of the relative width of approach channel with a rectangular cross-sectionen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-188677en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:46:22en
sync.item.modts2025.01.17 16:37:28en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav vodních stavebcs
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