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Aeration in Bottom Outlet Conduit of Dam for Prevention of Cavitation

Autor Roya Kolachian Langeroudi, Akram Abbaspour, Farzin Salmasi
en Limba Engleză Paperback – oct 2014
Bottom outlet conduits are the most important side constructions in dams which are used to control of reservoir water volume in back of dam, regulation of downstream water right and drain of the reservoir sediment. The Flushing operations to drain the reservoir sediments by high-speed flow in bottom outlet conduits of dams can create cavitation damages in these structures. Experiences showed that the flow aeration can decrease the risk of cavitation damages effectively. The investigations of flow characteristics by numerical methods along with physical hydraulic models can be effective in choosing the best choice for aeration and also decrease extra cost and time of physical modeling. In this research the cavitation occurrence in the bottom outlet of Sefidroud Dam was evaluated with different gate openings using FLUENT software in 3D mode. A method for aeration of this structure concluding aerator ramps on floor and side walls of conduit was selected and then the results of numerical and physical model were compared.
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Specificații

ISBN-13: 9783639661804
ISBN-10: 363966180X
Pagini: 124
Dimensiuni: 152 x 229 x 7 mm
Greutate: 0.19 kg
Editura: Scholars' Press

Notă biografică

Roya Kolachian received the B.Sc. degree in water engineering from the University of Tehran, in 2008, and the M.Sc. degree in Civil engineering from the Islamic Azad University, Ahar branch,Iran, in 2012.Dr. Akram Abbaspour & Dr. Farzin Salmasi, B.Sc., M.Sc., PhD., Department of Water Engineering, Faculty of Agriculture, Tabriz university, Iran