Investigation of dam-break flood waves in a dry channel with a hump

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dc.authoridKocaman, Selahattin/0000-0001-8918-0324
dc.contributor.authorOzmen-Cagatay, Hatice
dc.contributor.authorKocaman, Selahattin
dc.contributor.authorGuzel, Hasan
dc.date.accessioned2024-09-18T20:15:01Z
dc.date.available2024-09-18T20:15:01Z
dc.date.issued2014
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractDam-break represents a potential flood hazard for population at downstream due to the sudden release of the water stored in the reservoir. The prediction of dam-break wave parameters is complicated furthermore by the presence of irregularities in the channel. This paper aims to present an experiment and numerical simulations of dam-break flood wave in an initially dry flume with a hump. A triangular-shaped bottom obstacle was placed downstream the dam site in the channel to provide the effects of both bottom slope and abrupt change in topography on propagation of dam-break flood waves. A new experiment was carried out in a smooth rectangular cross-section channel by using digital image processing. Flow behaviour was synchronously recorded with three adjacent CCD cameras through the glass walls of the entire downstream channel. This adopted measuring technique eliminates the necessity for test repetition due to capturing the whole flow field at once. Not only continuous free surface profiles at various times but also time evolutions of the water levels for selected locations were simply acquired from the video records of the image processing by virtual wave probe. Furthermore, dam-break flow was numerically simulated by the VOF-based CFD commercial software package FLOW-3D, which utilizes two distinct approaches, namely the Reynolds-averaged Navier-Stokes equations (RANS) with a k-epsilon turbulence model and the simple Shallow Water Equations (SWEs). Comparison between the computed results and the experimental data shows that both numerical models reproduce the flow behaviour with reasonable accuracy and the agreement is slightly better in RANS model compared to simple SWE model. Current experimental data can be useful for validation of other numerical models. (C) 2014 International Association for Hydro-environment Engineering and Research, Asia Pacific Division. Published by Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.jher.2014.01.005
dc.identifier.endpage315en_US
dc.identifier.issn1570-6443
dc.identifier.issn1876-4444
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-84908303405en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage304en_US
dc.identifier.urihttps://doi.org/10.1016/j.jher.2014.01.005
dc.identifier.urihttps://hdl.handle.net/20.500.12483/9384
dc.identifier.volume8en_US
dc.identifier.wosWOS:000345488000013en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofJournal of Hydro-Environment Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDam-breaken_US
dc.subjectFlood waveen_US
dc.subjectImage processingen_US
dc.subjectHumpen_US
dc.subjectFLOW-3Den_US
dc.subjectVOFen_US
dc.subjectRANSen_US
dc.subjectSWEen_US
dc.titleInvestigation of dam-break flood waves in a dry channel with a humpen_US
dc.typeArticleen_US

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