Distorted Physical Model to Study Sudden Partial Dam Break Flows in an Urban Area

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dc.contributor.authorGuney, M. S.
dc.contributor.authorTayfur, G.
dc.contributor.authorBombar, G.
dc.contributor.authorElci, S.
dc.date.accessioned2019-10-27T22:12:38Z
dc.date.available2019-10-27T22:12:38Z
dc.date.issued2014
dc.departmentEge Üniversitesien_US
dc.description.abstractA distorted physical model, based on Urkmez Dam in Izmir, Turkey, was built to study sudden partial dam break flows. The distorted model had a horizontal scale of 1/150 and a vertical scale of 1/30, containing dam reservoir, dam body, and downstream area-from dam body to Urkmez urban area until the sea coast. In the model, the reservoir is approximately 12 m(3), the dam body has a width of 2.84 m and a height of 1.07 m, and the downstream area is nearly 200 m(2). The Urkmez Dam was chosen because Urkmez Town is located right at its downstream area, allowing the study of dam break flows in an urban area. Furthermore, the dimensions were suitable such that it allowed the construction of a physical model (dam reservoir, dam body, and downstream area) having a horizontal scale of 1/150 in the available space of 300 m(2). The features creating roughness such as buildings, bridge, and roads were also reflected in the physical model. The dam break flow was investigated for sudden partial collapse, which was simulated by a trapezoidal breach on the dam body. The water depths at downstream area were measured at eight different locations by using e+ WATER L (level) sensors. The velocities were measured at four different locations by ultrasonic velocity profiler (UVP) transducers. The propagation of the flood was recorded by a high-defnition camera. The experimental results show that the Urkmez area can be flooded in a matter of minutes, at depths reaching up to 3 m in residential areas in 4 min. The flood wave front can reach the residential areas in 2 min and to the sea coast in 4 min. Flow velocities can reach 70.9 km/h in sparse residential areas, close to dam body. Away from the dam body in the sparse buildings part of the town, the velocities can reach 27.7 km/h. In dense residential areas of the town, the velocities are too low (2.8 km/h) but flow depths can reach 3 m. Velocity profiles show similar behavior like unsteady and nonuniform open channel flow in nonresidential areas close to the dam body. In residential areas away from the dam body, the velocity profiles are more uniform, having lower velocity values. Vertical variations of velocities show markedly different behavior during rising and recession stages. The profiles are smooth during the rising stage in sparse residential area, yet it shows fluctuating behavior during the recession stage. (C) 2014 American Society of Civil Engineers.en_US
dc.description.sponsorshipTurkish Science and Technological Research Council (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [110M240]en_US
dc.description.sponsorshipThis study is financially supported by Turkish Science and Technological Research Council (TUBITAK) through the 110M240 project. We deeply thank TUBITAK. Our gratitude goes to Izmir Municipality and IZSU Administration for their contributions on the acquisition of the required drawings and the relevant maps. The writers would also like to thank Professor Dr. Turhan Acatay for his valuable advice.en_US
dc.identifier.doi10.1061/(ASCE)HY.1943-7900.0000926
dc.identifier.issn0733-9429
dc.identifier.issn1943-7900
dc.identifier.issn0733-9429en_US
dc.identifier.issn1943-7900en_US
dc.identifier.issue11en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1061/(ASCE)HY.1943-7900.0000926
dc.identifier.urihttps://hdl.handle.net/11454/49531
dc.identifier.volume140en_US
dc.identifier.wosWOS:000344005700006en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAsce-Amer Soc Civil Engineersen_US
dc.relation.ispartofJournal of Hydraulic Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDistorted physical modelen_US
dc.subjectDam break flowsen_US
dc.subjectSudden partial collapseen_US
dc.subjectFlood propagationen_US
dc.subjectFlow depthsen_US
dc.subjectVelocity profilesen_US
dc.titleDistorted Physical Model to Study Sudden Partial Dam Break Flows in an Urban Areaen_US
dc.typeArticleen_US

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