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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 3 - WATER ENGINEERING AND CIVILIZATION : Study on the Aerator of Spillway Tunnel in One Large-scale Project
Study on the Aerator of Spillway Tunnel in One Large-scale Project
Author : Siying Wang, Jinbo Yang and Caihuan Wang
This paper studied the hydraulic characteristics of the spillway tunnel in one large scale hydroelectric project through 1:50 and 1:30 scaled hydraulic model tests. The water surface profile, flow speed, time averaged pressure along the tunnel were measured and the cavitation numbers were calculated. The results show the flow velocity may exceed 30m\s and the cavitation number may be smaller than 0.3 in the last 60~70m section before the outlet, which means cavitation damadge may occur in this range. Based on these results, an aerator was designed and set at the end of the quadratic curve section in the open channel of the tunnel. Experiments on the spillway tunnel with aerator showed that steady cavity was formed behind the aerator and the downstream flow was well aerated, which proved that the aeration effect was fine and cavitation damage could be successfully avoided.
File Size : 242,104 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 3 - WATER ENGINEERING AND CIVILIZATION
Date Published : 18/07/2016
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