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Effects of Floating Rafts as Anti-Vortex Devices at Horizontal Intakes

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dc.contributor.author Göğüş, Mustafa
dc.contributor.author Gökmener, Serkan
dc.date.accessioned 2024-05-30T13:06:22Z
dc.date.available 2024-05-30T13:06:22Z
dc.date.issued 2023
dc.identifier.citation Göğüş, Mustafa; Gökmener, Serkan. Effects of Floating Rafts as Anti-Vortex Devices at Horizontal Intakes, Proceedings of the IAHR World Congress, 40th IAHR World Congress, 2023, Vienna, 21 August 2023through 25 August 2023, pp. 2060-2066. tr_TR
dc.identifier.isbn 9789083347615
dc.identifier.issn 2521-7119
dc.identifier.uri http://hdl.handle.net/20.500.12416/8451
dc.description.abstract Air- entraining vortices created by swirling flows on intakes cause serious problems such as; increasing loss of hydraulic load and discharge at water intake structures, loss of efficiency, operational problems, cavitation and vibration problems in hydraulic machines. Hence the position of the intake should be justified for the most critical scenario as the reservoir is at dead or at minimum storage level to avoid the occurrence of air-entraining vortices. Although intakes are designed by considering the formation of air-entraining vortices, they cannot be prevented due to approach flow conditions and submergence. Therefore, some structural changes should be considered in order to avoid the occurrence of air-entraining vortices. One of these methods is using anti-vortex devices to prevent the formation of air-entraining vortices. In this experimental study, floating rafts at different sizes were tested as anti-vortex devices to prevent the formation of air-entraining vortices at single and multiplehorizontal intake structures under symmetrical and asymmetrical approach flow conditions. Three identical pipes of diameter Di=0.265 m were tested at a wide range of discharge with varying sidewall clearances. Experiments were conducted for three different combinations of the intake structures: single, double and triple water intakes were operated, respectively. Different side wall distances in the approach channels of the intake structures were specified previously to create symmetrical and asymmetrical flow conditions. The side walls were located according to these distances before each experiment. For single and double water intake structures, Wraft=10 cm and triple water intake structures, Wraft=20 cm raft width were found to be successful for vortex prevention. Moreover, Wrafts/Di values that gave successful results are 0.38 for single and double intake structures and 0.75 for triple intake structures. tr_TR
dc.language.iso eng tr_TR
dc.relation.isversionof 10.3850/978-90-833476-1-5_iahr40wc-p0712-cd tr_TR
dc.rights info:eu-repo/semantics/closedAccess tr_TR
dc.subject Air-Entraining Vortices tr_TR
dc.subject Anti-Vortex Devices tr_TR
dc.subject Critical Submergence tr_TR
dc.subject Horizontal Intakes tr_TR
dc.subject Single and Multiple Intakes tr_TR
dc.title Effects of Floating Rafts as Anti-Vortex Devices at Horizontal Intakes tr_TR
dc.type conferenceObject tr_TR
dc.relation.journal Proceedings of the IAHR World Congress tr_TR
dc.contributor.authorID 6062 tr_TR
dc.identifier.startpage 2060 tr_TR
dc.identifier.endpage 2066 tr_TR
dc.contributor.department Çankaya Üniversitesi, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümü tr_TR


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