dc.contributor.author | Kocaman, Selahattin | |
dc.contributor.author | Güzel, Hasan | |
dc.contributor.author | Evangelista, Stefania | |
dc.contributor.author | Özmen-Çağatay, Hatice | |
dc.contributor.author | Viccione, Giacomo | |
dc.date.accessioned | 2020-05-24T14:24:14Z | |
dc.date.available | 2020-05-24T14:24:14Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Kocaman, S., Güzel, H., Evangelista, S., Ozmen-Cagatay, H., Viccione, G. (2020). Experimental and numerical analysis of a dam-break flow through different contraction geometries of the channel. Water (Switzerland), 12 (4), art. no. 1124.
https://doi.org/10.3390/W12041124 | en_US |
dc.identifier.issn | 2073-4441 | |
dc.identifier.uri | https://doi.org/10.3390/W12041124 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12508/1043 | |
dc.description.abstract | Dam-break wave propagation usually occurs over irregular topography, due for example to natural contraction-expansion of the river bed and to the presence of natural or artificial obstacles. Due to limited available dam-break real-case data, laboratory and numerical modeling studies are significant for understanding this type of complex flow problems. To contribute to the related field, a dam-break flow over a channel with a contracting reach was investigated experimentally and numerically. Laboratory tests were carried out in a smooth rectangular channel with a horizontal dry bed for three different lateral contraction geometries. A non-intrusive digital imaging technique was utilized to analyze the dam-break wave propagation. Free surface profiles and time variation of water levels in selected sections were obtained directly from three synchronized CCD video camera records through a virtual wave probe. The experimental results were compared against the numerical solution of VOF (Volume of Fluid)-based ShallowWater Equations (SWEs) and Reynolds-Averaged Navier-Stokes (RANS) equations with the k-" turbulence model. Good agreements were obtained between computed and measured results. However, the RANS solution shows a better correspondence with the experimental results compared with the SWEs one. The presented new experimental data can be used to validate numerical models for the simulation of dam-break flows over irregular topography. © 2020 by the authors. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | MDPI | en_US |
dc.relation.isversionof | 10.3390/W12041124 | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | CFD | en_US |
dc.subject | Contraction | en_US |
dc.subject | Dam-break | en_US |
dc.subject | RANS | en_US |
dc.subject | SWEs | en_US |
dc.subject | Unsteady flow | en_US |
dc.subject.classification | Finite volume method | Equations of motion | Volume scheme | en_US |
dc.subject.classification | Water Resources | |
dc.subject.other | Dams | en_US |
dc.subject.other | Imaging techniques | en_US |
dc.subject.other | Numerical models | en_US |
dc.subject.other | Topography | en_US |
dc.subject.other | Turbulence models | en_US |
dc.subject.other | Video cameras | en_US |
dc.subject.other | Water levels | en_US |
dc.subject.other | Wave propagation | en_US |
dc.subject.other | Contraction expansion | en_US |
dc.subject.other | Digital imaging technique | en_US |
dc.subject.other | Experimental and numerical analysis | en_US |
dc.subject.other | Irregular topography | en_US |
dc.subject.other | Rectangular channel | en_US |
dc.subject.other | Reynolds averaged Navier Stokes (RANS)equations | en_US |
dc.subject.other | Shallow water equations | en_US |
dc.subject.other | VOF (volume of fluid) | en_US |
dc.subject.other | Navier Stokes equations | en_US |
dc.subject.other | Breaking wave | en_US |
dc.subject.other | Channel flow | en_US |
dc.subject.other | Dam failure | en_US |
dc.subject.other | Experimental study | en_US |
dc.subject.other | Geometry | en_US |
dc.subject.other | Numerical method | en_US |
dc.subject.other | River bed | en_US |
dc.subject.other | Turbulence | en_US |
dc.subject.other | Wave propagation | en_US |
dc.subject.other | Waves | |
dc.subject.other | Simulation | |
dc.subject.other | Volume | |
dc.subject.other | Model | |
dc.subject.other | Computation | |
dc.title | Experimental and numerical analysis of a dam-break flow through different contraction geometries of the channel | en_US |
dc.type | article | en_US |
dc.relation.journal | Water (Switzerland) | en_US |
dc.contributor.department | Mühendislik ve Doğa Bilimleri Fakültesi -- İnşaat Mühendisliği Bölümü | en_US |
dc.identifier.volume | 12 | en_US |
dc.identifier.issue | 4 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.contributor.isteauthor | Kocaman, Selahattin | en_US |
dc.contributor.isteauthor | Güzel, Hasan | en_US |
dc.relation.index | Web of Science - Scopus | en_US |