Experimental Studies at the Bottom Outlet Structure of the Ilisu Dam and HEPP Project

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dc.contributor.authorKumcu, Serife Yurdagul
dc.contributor.authorKokpinar, Mehmet Ali
dc.date.accessioned2024-02-23T14:45:09Z
dc.date.available2024-02-23T14:45:09Z
dc.date.issued2013
dc.departmentNEÜen_US
dc.description35th World Congress of the International-Association-for-Hydro-Environment-Engineering-and-Research (IAHR) -- SEP 08-13, 2013 -- Chengdu, PEOPLES R CHINAen_US
dc.description.abstractIlisu Dam and Hydroelectric Power Plant (HEPP) are under construction on the Tigris River on the south east of the Turkey. During the construction stage, Tigris River has been diverted by 3 concrete-lined diversion tunnels each having a diameter of DT1 = DT2 = DT3 = 12 m and the lengths of L-1 = 1064 m, L-2 = 1016.1 m and L-3 = 915.3 m. During the last stage of the construction, it was planned that DT2 diversion channel would be used as the dam bottom outlet structure. In the bottom outlet structure design, water is released from the intake structure to the bottom outlet by means of two slide gate valves as control structures. In this study, the valves' performance and their rating curves for full and partial openings during the operation conditions are analyzed from an experimental point of view. The flow conditions, the water jet lengths at the downstream of the valves are also investigated in this paper along with the possibility of cavitation in the tunnel. Experimental studies showed that, during the maximum operation conditions (the reservoir water level, RWL = 520 m and the flow discharge, Q = 840 m(3)/s) of the bottom outlet, the maximum water jet trajectory was observed as L-jet = 40 m. The pressure measurements showed that, since the tunnel was not aerated enough cavitation was observed. As a consequence, and following a detailed experimental investigation that considered all the operational conditions,, the locations and the shapes of the aerators were redesigned. Finally, three aerators having diverters were added to diversion tunnel and their locations were at Km: 090, Km: 210 and Km: 330 as taking into account that slide gate valves were at Km: 000 (Kumcu, 2011).en_US
dc.description.sponsorshipInt Assoc Hydro Environm Engn & Resen_US
dc.identifier.endpage1357en_US
dc.identifier.isbn978-7-302-33544-3
dc.identifier.startpage1347en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12452/17266
dc.identifier.wosWOS:000343761501066en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherTsinghua Univen_US
dc.relation.ispartofProceedings Of The 35th Iahr World Congress, Vols I And Iien_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectIlisu Damen_US
dc.subjectSpillway Aeratorsen_US
dc.subjectBottom Outleten_US
dc.subjectWater Jeten_US
dc.subjectDiversion Tunnelen_US
dc.titleExperimental Studies at the Bottom Outlet Structure of the Ilisu Dam and HEPP Projecten_US
dc.typeConference Objecten_US

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