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 : 35th IAHR Congress - Chengdu (2013) : THEME 3 - WATER ENGINEERING AND CIVILIZATION : Experimental Research on Air Concentration of Flow after Bottom Aerators on Chute with Anti-arc
Experimental Research on Air Concentration of Flow after Bottom Aerators on Chute with Anti-arc
Author : Yimin Xu, Wei Wang, Jixiao Zhang, Hongxuan Yang and Wei Zhao
Aeration facility is often the most useful and effective measure to protect discharge release structures from cavitation damage caused by high speed flow. The key problem for aeration facility to reduce cavitation is that the air quantity aerated into the flow should reach to some extent and have a good air distribution in the water along the chute. For the spillways or tunnels with straight bottom profile and with curved profile, the distribution law of aeration density is difference. This paper mainly focuses on t he streamwise development of the air concentration in the flow on the chute with anti-arc segment and focuses on some influence factors for the distribution of the air concentration. Based on the systematic model tests, the air distributions along the chute after the aerator for different flow conditions and aerators are investigated. The results show that there are three type air concentration profiles along the chute. After the aerator along the flow direction, Air concentration increases, then reaches to its maximum value after the jet placement and then decreases.
File Size : 182,899 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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