IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 4: Responding to Shifting Water Resources : Effects of entrained air manner on cavitation damage
Effects of entrained air manner on cavitation damage
Author : Wu Jianhua and Luo Chao
Early in 1953 the experiments by Peterka proved that air entrainment has effect on decreasing cavitation damage. This methodology has been widely used in release works of high dams since inception of air entrainment in the Grand Goulee Dam in 1960. Behavior, mechanism and application of air entrainment have been investigated for over half century. However, severe cavitation damage happened due to complex mechanism of air entrainment. Effects of air entrainment are related to many factors, including geometric, hydraulic parameters and entrained air manners. In this work a test device for air entrainment was designed, behavior of reducing cavitation damage was investigated by experiments. The results showed that magnitude of reduction of cavitation damage for manner of 1+1+1 is larger than that for 3. It is important to design an effective manner of air entrainment.
File Size : 949,551 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 4: Responding to Shifting Water Resources
Date Published : 01/07/2011
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