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Title: Air entrainment and ski jump of the Itaipu dam spillway

Description: The spillway intake is controlled by a series of gates, followed by a smooth concrete chute with a series of aeration devices on the bottom of the spillway designed to introduce air into the flow to reduce the risks of cavitation damage. At the downstream end, a ski jump (or flip bucket) deflects the flow upwards into a free jet that discharges downstream into a plunge pool. Volume at maximum normal level is 30 giga cubic meters, maximum width = 12 km, surface (maximum operating level) 1460 km^2, and present power output = 12.6 Giga Watts.

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Contributed By: Prof. Hubert Chanson, University of Queensland, and Dr. Nehemias Lacerda of Brazil

 
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